1. Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?

2. In which of the following industries is mica as a raw material?

3. Out of the following, which is not emitted by radioactive substance?

5. Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?

6. Radiocarbon dating technique is used to estimate the age of

7. Lux is the SI unit of

8. On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because

9. Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:

10. Mica is used in electrical appliances such as electric iron because mica is

12. Light year is a unit of

13. When the main switch of the house is put off it disconnects the

14. Railway tracks are banked on curves

15. Solar eclipse will take place when

16. It is easier to roll a stone up a sloping road than to lift it vertical upwards because

17. Stars which appear single to the naked eye but are double when seen through a telescope are

18. The electric current in a metal wire is due to the flow of –

19. What is the value of 1 kW = ?

20. Superconductors are substances which

21. The absorption of ink by blotting paper involves:

22. On a stationary sail boat, air is blown from a fan attached to the boat. The boat

23. Magnetism at the centre of a bar magnet is

24. Stars twinkle because

26. Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?

27. It takes much longer to cook food in the hills than in the plains, because

28. It is easier to roll a barrel full of coal tar than to pull it because

29. Mirage is due to:

30. Nuclear sizes are expressed in a unit named

31. Electric power is measured in units of

32. Of the following properties of a wave, the one that is independent of the other is its

33. If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same:

34. On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:

35. The fuse in an electric circuit is connected in

36. Point A is at a lower electrical potential than point B. An electron between them on the line joining them will

37. ML2T-2 is the dimensional formula for

38. Pa(Pascal) is the unit for

39. Moment of inertia is:

40. Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open

41. Find the current (in A) when a charge of 1200C flows in 6 seconds.

42. Planets do not twinkle because

43. The unit of electrical power is

44. One should not connect a number of electrical appliances to the same power socket because

45. Out of the following pairs, which one does not have identical dimension?

46. Rainbow is due to

47. Isotopes of an element contain

48. Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit

49. Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2

50. It is more difficult to walk on a sandy road than on a concrete road because

51. Siphon will fail to work if:

52. On a rainy day, small oil films on water show brilliant colours. This is due to

53. Safety fuse wire used in domestic electrical appliances is made of metal of low

54. Which tube used to produce X-ray?

55. Suitable impurities are added to a semiconductor depending on its use. This is done in order to

56. Planets are

57. Let a thin capillary tube be replaced with another tube of insufficient length then, we find water

58. Light from the Sun reaches us in nearly

59. Find the current (in A) when a charge of 500 Coulomb flows in 25 seconds.

60. Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in

61. Metals are good conductors of electricity because:

62. Natural radioactivity was discovered by

63. Intensity of sound has

64. Sound of frequency below 20 Hz is called

65. Intensity of sound at a point is ____ its distance from the source.

66. Materials for rain-proof coats and tents owe their water-proof properties to

67. The best conductor of electricity among the following is :

68. Oil raise up the wick in a lamp. The principle involves

69. Radio telescopes are better than optical telescopes because

70. Inside an aeroplane, flying at a high altitude,

71. Large astronomical telescopes always use as objective

72. Metals are good conductors of electricity because

73. Sound waves in air are

74. Stars appears to move from east to west because

75. Identify the vector quantity from the following

76. Mach number is used in connection with the speed of

77. Copper wires are generally used for electrical power transmission instead of iron wire because :

78. An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is

79. Light travels at the fastest speed in:

80. An electric fuse is based on

81. Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from

82. The earth-wire of a cable is connected to

83. RADAR is used for:

84. A Fuse wire is characterised by

85. Lightning is caused due to

86. Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? I. Diffusion II. Refraction III. Internal reflection

87. Pick out the scalar quantity

88. Working of safety fuses depends upon 1. magnetic effect of the current 2. chemical effect of the current 3. magnitude of the current 4. heating effect of the current Select the correct answer using the code given below.

89. Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?

90. Which of the following terms is not used in the field of physics?

91. During thunderstorm you are travelling in a car. To protect yourself from the lightning you will have to

92. Radiocarbon is produced in the atmosphere as a result of

93. Supersonic plane fly with the speed

94. Rectifiers are used to convert:

95. Optical fibre works on the

96. Of the following natural phenomena, tell which one known in Sanskrit as ‘deer’s thirst’?

97. Mercury is commonly used as a thermometric fluid rather than water because

98. Sound travels at the fastest speed in

99. Minimum number of unequal vectors which can give zero resultant are

100. Kilowatt-hour is the unit of :