Physics – Set 11 – LearnZeal

Physics – General – LS

Physics – Set 11

Dear ! This is Physics – Set 11 Quiz and it contains 100 questions.

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1 / 100

1. The frequency of ultrasound wave is typically

Above 20 kHz

Above 20,000 kHz

Below 20 kHz

Below 02 kHz

2 / 100

2. Radian is used to measure

Temperature

Intensity of Flame

Angle

Solid Angle

3 / 100

3. Who among the following is credited for the Corpuscular theory of light?

Isaac Newton

Christiaan Hyugens

Albert Einstein

James Clerk Maxwell

4 / 100

4. Which of the following has the highest frequency?

Cosmic rays

X-rays

Radio waves

Microwaves

5 / 100

5. These waves cannot be transmitted through vacuum.

Light

Sound

Heat

Electromagnetic

6 / 100

6. Pycnometer is an instrument used to measure the

Density

Intensity of solar radiation

Intensity of earthquake

High temperatures

7 / 100

7. The flux commonly used in brazing is

Ammonium chloride

Borax

Zinc chloride

Resin plus alcohol

8 / 100

8. Choose the most appropriate answer: Sir CV Raman was awarded Noble Prize for his work connected with which of the following phenomenon of radiation?

Scattering

Diffraction

Interference

Polarization

9 / 100

9. The capacity of a water heater is measured in

Gallons

Litres

Metres

Both A & B

10 / 100

10. Which of the following is the unit of perceived loudness of sound ?

Decibel

Sone

Hertz

Phon

11 / 100

11. Hydroscope is an instrument that shows changes in:

Sound under water

Atmospheric humidity

Density of liquid

None of these

12 / 100

12. What is the unit of relative density?

Kg/m

Kg/m²

Kg/m³

It has no unit

13 / 100

13. Positive feedback is used in

Amplifiers

Rectifiers

Oscillators

None of these

14 / 100

14. Why are we able to hear short wave broadcasts better than long wave broadcasts ?

Short waves are more energetic than long waves.

Short waves are unaffected by atmospheric disturbances.

Short wave broadcasts are made by nearby radio stations.

By convention, short waves are meant for long distances, whereas long waves are reserved for short distances.

15 / 100

15. Which of the following scientific discoveries was made by C.V. Raman?

Inelastic scattering of light by molecules

Super Conductivity

Controlled nuclear fission

Cyclotron

16 / 100

16. Which physical quantity is measured in ‘siemens’?

Electric potential

Electrical conductance

Magnetic flux

Refractive index

17 / 100

17. How many bottles of water is a gallon?

18 / 100

18. Air is said to be saturated when

Its pressure is minimum

It contains the maximum content of water vapour

Its thickness is maximum

It blows over the barren land

19 / 100

19. The modulus of rigidity is the ratio of

Longitudinal stress to longitudinal strain

Volume stress to volume strain

Shearing stress to shearing strain

Tensile stress to tensile strain

20 / 100

20. A gradual increase in loudness is known as

Crescendo

Timbre

Fortissimo

None of these

21 / 100

21. Choose the most appropriate answer: Sir CV Raman was awarded Noble Prize for his work connected with which of the following phenomenon of radiation?

Scattering

Diffraction

Interference

Polarization

22 / 100

22. Which of the following pair is Incorrect? I. Parsec – Distance II. Barrel – Liquid III. Light year – Time

Only III

Only I and III

Only II

All are correct

23 / 100

23. Flight Recorder is technically called :

Dark box

Blind box

Black box

Altitude meter

24 / 100

24. Longitudinal waves cannot travel through

Vacuum

Solid

Liquid

Gas

25 / 100

25. In spherical polar coordinates (l, q, a), q denotes the polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by

Psinq sina

Psinq cosa

Pcosq sina

Pcosq cosa

26 / 100

26. Which measurement describes the pressure of a gas?

450 mm Hg

315 K

251 g/cub.cm

None of these

27 / 100

27. A standing wave occurs when

A wave reflects upon itself

The amplitude of a wave exceeds its wavelength

Two waves overlap

The speed of the wave is zero or near zero

28 / 100

28. Ultrasound devices operate with minimum frequency from

20kHz

35 kHz

45 kHz

60 kHz

29 / 100

29. What is found in frequency modulation ?

Fixed frequency

Fixed dimension

Change in frequency and dimension

Change in dimension only

30 / 100

30. Tensional forces normally cause which one of the following?

Normal faults

Strike-slip faults

Thrust faults

Reverse faults

31 / 100

31. Lux is the SI unit of

Luminous flux

Luminous efficiency

Intensity of illumination

Luminous intensity

32 / 100

32. What is the unit of the physical quantity “Jerk”?

Meter second

Meter per second cube

Meter per second square

Meter per second

33 / 100

33. At constant pressure, the volume of a fixed mass of a gas is directly proportional to its absolute temperature. It is the statement of

Boyle's Law

Charle's Law

Gay-Lussac's Law

Avogadro's Law

34 / 100

34. The Hooke’s law is valid for

Only proportional region of the stress strain curve

Entire stress strain curve

Entire elastic region of the stress strain curve

Elastic as well as plastic region of the stress strain curve

35 / 100

35. Red light has a wavelength of 70 A°. In “nm” it is

7 nm

0.07 nm

70 nm

700 nm

36 / 100

36. A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ?

Increase

Dacrease

Remain constant

Will increase first and then dcrease

37 / 100

37. Stationary wave is formed by

A transverse wave superposing a longitudinal wave

Two waves of the same speed superposing

Two waves of same frequency travelling in the same direction

Two waves of same frequency travelling in the opposite direction

38 / 100

38. What is the unit of the physical quantity “Inductance”?

Weber

Farad

Henry

Tesla

39 / 100

39. How many laws of physics are there?

40 / 100

40. Who gave black hole theory?

Albert Einstein

Stephen Hawking

Isaac Newton

None of these

41 / 100

41. Which of the following occurred first ?

Albert Einstein propounded the General Theory of Relativity

Max Planck unveiled the Quantum Theory

Guglielmo Marconi sent out the first wireless signals

Wright Brothers successfully flew an aircraft

42 / 100

42. Which of the following is the unit of Astronomical Distance ?

Metre/sec

Sec

Para/sec

Parsec

43 / 100

43. Due to temperature variation along a conductor, potential variation occurs along it. This phenomenon is known as

Thomson effect

Joule effect

Seebeck effect

Peltier effect

44 / 100

44. The transport phenomenon occurs only in ________ state of a gas and is ________

Non-equilibrium, irreversible

Non-equilibrium, reversible

Equilibrium, irreversible

Equilibrium, reversible

45 / 100

45. Who is known as the ‘father of quantum theory’?

Albert Einstein

Max Planck

Werner Heisenberg

Ernest Rutherford

46 / 100

46. The component used for tuning a radio is basically a variable

Resisto

Condenser

Inductor

Transformer

47 / 100

47. 1 Micron is equal to

10⁻⁹m

10⁻¹²m

10⁻⁶m

10⁻¹⁵m

48 / 100

48. Who among the following is credited for the discovery of ”Expanding Universe”?

Edwin Hubble

Niels Bohr

S Chandra Shekhar

C.V Raman

49 / 100

49. Who among the following gave the Uncertainty principle?

R.A Milkman

Ernset Rutherford

S.N Bose

Werner Heisenberg

50 / 100

50. Which of the following is/are part of the Classical Physics?

Optics

Thermodynamics

Both a and b

None

51 / 100

51. The theory of relativity is presented by which scientist

Albert Einstein

Isaac Newton

Stephen Hawking

Marie Curie

52 / 100

52. Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in opposite direction with a speed of 20 mm/s. The distance in mm between adjacent nodes is :

1.0

1.2

1.5

2.0

53 / 100

53. If the phase difference between two points is 120° for a wave with velocity of 360 m/s and frequency 500 Hz, then path difference between the two points is

1 cm

6 cm

12 cm

24 cm

54 / 100

54. What factors contribute to global winds?

Coriolis Effect

Convection Cells

Uneven warming of the earth by the sun

All of these

55 / 100

55. Depth of ocean is measured by

Animometer

Aerometer

Siesmometer

Fathometer

56 / 100

56. Matter waves are

De Broglie waves

Electromagnetic waves

Transverse waves

Longitudinal waves

57 / 100

57. Stress can be defined as ________ quantity.

Scalar

Vector

Phasor

Tensor

58 / 100

58. Which of the following is a vector quantity?

Area

Power

Electric Current

Energy

59 / 100

59. The waveform of a certain signal can be studied by

Spectrometer

Cathode ray oscilloscope

P – n junction diode

Sonometer

60 / 100

60. What is unit of Astronomical distance ?

Light year

Angstrom

Weber

Lux

61 / 100

61. Which of the following is not a vector quantity?

Acceleration

Density

Displacement

Impulse

62 / 100

62. What is the range of masses involved in the study of Physics?

A.10⁻¹⁹ kg to 10³⁸ kg

10⁻³⁰ kg to 10⁵⁵ kg

10⁻³⁰ kg to 10³⁰ kg

10⁻¹⁹ kg to 10⁵⁵ kg

63 / 100

63. The SI unit of luminous emittance is :

Lux

Candela

Lumen

Lumen second

64 / 100

64. The modulus of elasticity for mild steel is approximately equal to

210 kN/mm²

100 kN/mm²

80 kN/mm²

10 kN/mm²

65 / 100

65. General purpose utility gloves are

For surgeries

For cleaning procedures

For handling tubes

All of these

66 / 100

66. When a light wave is reflected from a mirror, there is a change in its

Frequency

Amplitude

Wavelength

Velocity

67 / 100

67. A micron is equal to

0.1 mm

0.01 mm

0.001 mm

0.0001 mm

68 / 100

68. Which of the following is not a transverse wave?

Light waves

Radio waves

Sound waves

All of these

69 / 100

69. Which of the following is not a vector quantity ?

Speed

Velocity

Torque

Displacement

70 / 100

70. Intensity of any wave is proportional to which of the following?

Amplitude

Square of amplitude

Square root of amplitude

Cube of amplitude

71 / 100

71. A spring is an example of which of these

Newton's 3rd law

Hooke's law

Newton's 1st law

Conservation of mass law

72 / 100

72. Which is a correct way to measure wavelength?

Nearest peak to peak

Nearest peak to nearest trough

Nearest trough to peak

None of these

73 / 100

73. The word “Physics” comes from the Greek word

Phiji

Fusis

Phusik

None of these

74 / 100

74. A doppler effect occurs when a source of sound moves

Away from you

Towards you

Both A & B

None of these

75 / 100

75. Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?

It is narrow band of high-velocity wind.

It follows the wave path near the tropopause at elevations of 8 km to 15 km.

Jet streams are typically continuous over long distances.

In summer, the polar front jet achieves its maximum force.

76 / 100

76. The unit of measurement of noise is

Decibel

Hertz

Amplifier

Acoustics

77 / 100

77. A copper disc has a hole. If the disc is heated, the size of the hole

Increases

Decreases

No change

First increases and than decreases

78 / 100

78. A wave with high amplitude have

High pitch

Low energy

High energy

Low pitch

79 / 100

79. Two vectors are said to be equal if

Only their magnitudes are same

Only their directions are same

Both magnitude and direction are same

Magnitudes are same but directions are opposite

80 / 100

80. Amount of water vapour in the atmosphere is measured in terms of

Humidity

Droplets

Smog

All of these

81 / 100

81. If the temperature of a place increases suddenly, the relative humidity

Increases

Decreases

Remains constant

Fluctuates

82 / 100

82. Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K?

K1k2/k1+k2

2k1k2/k1+k2

K1+k2/k1k2

None

83 / 100

83. Which of the following events occurred first ?

Albert Einstein propounded the General Theory of Relativity

Max Planck unveiled the Quantum Theory

Marconi first tranmitted a wireless signal

Madame Marie Curie became the first woman Nobel Prize winner

84 / 100

84. When a stone is thrown in the calm water of a pond the waves produced on the surface of water in the pond are

Longitudinal

Transverse

Both longitudinal and transverse

Waves are not produced

85 / 100

85. Which of the following are used for accurately measuring very small time intervals ?

Pulsars

Quartz clocks

Atomic clocks

White dwarfs

86 / 100

86. Which of the following property of sound is affected by change in air temperature?

Frequency

Intensity

Amplitude

Wavelength

87 / 100

87. For an ideal gas, which one of the following statements does not hold true?

The speed of all gas molecules is same

The kinetic energies of all gas molecules are not same

The potential energy of the gas molecules is zero

There is no interactive force between the molecules.

88 / 100

88. Kilohertz is a unit which measures

Electromagnetic radio wave frequencies

Electric resistance

Power used by a current of one ampere

Voltage

89 / 100

89. Gas thermometers are more sensitive than the liquid thermometers because the gases

Have large coefficient of expansion

Are lighter

Have low specific heat

Have high,specific heat

90 / 100

90. What happens to a liquid, when the vapour pressure equals the atmospheric pressure?

The liquid cools

The liquid boils

No change

The liquid evaporates

91 / 100

91. On which day ‘National Science Day’ is celebrated in India ?

February 23

February 25

February 26

February 28

92 / 100

92. Which of the following have the same unit ?

Work and power

Torque and moment of inertia

Work and torque

Torque and angular momentum

93 / 100

93. If density of oxygen is 16 times that of hydrogen, what will be their corresponding ratio of velocity of sound?

4 : 1

2 : 1

1 : 16

1 : 4

94 / 100

94. What is the unit of the physical quantity Entropy?

Watt per kelvin

Newton per kelvin

Pascal per kelvin

Joule per kelvin

95 / 100

95. Which physicists is the writer of the book ‘A Brief History of Time’?

Isaac Newton

Hans Bethe

Albert Einstein

Stephen Hawking

96 / 100

96. Which of the following is not a valid conservation law of classical physics?

Law of conservation of energy

Law of conservation of current

Law of conservation of angular momentum

Law of conservation of charge

97 / 100

97. In a ________ the wave particles of the medium vibrate in a direction perpendicular to the direction of wave propagation

Longitudinal

Rolling

Transverse

Field

98 / 100

98. The wavelength of a wave is the distance between

Crest and Trough

Crest and Crest

Trough and Trough

Both B & C

99 / 100

99. Who among the following is credited to work for the unification of electricity, magnetism and optics field of Physics?

James Clerk Maxwell

Michael Faraday

Haris Christian Oersted

Isaac Newton

100 / 100

100. Unit of impedance is ________

Ohm

Henry

Tesla

Hertz

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