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Guest practice

Physics

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89
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1

What happens to the shape of a body when a force is applied?

2

What is deformation?

3

Which force can change the size of a body?

4

Elasticity is the property of a material to:

5

Which material shows elasticity?

6

Hooke’s Law is valid up to:

7

According to Hooke’s Law, force is proportional to:

8

What is the spring constant?

9

The unit of spring constant is:

10

A stiffer spring has:

11

In a load-extension graph, the straight line shows:

12

The limit of proportionality is the point where:

13

Beyond elastic limit, a material:

14

What is pressure?

15

The SI unit of pressure is:

16

Pressure increases when:

17

Why do sharp knives cut better?

18

Atmospheric pressure is due to:

19

Atmospheric pressure decreases with:

20

Why is atmospheric pressure lower on mountains?

21

Which instrument measures atmospheric pressure?

22

The working liquid in a mercury barometer is:

23

Standard atmospheric pressure is equal to:

24

A manometer is used to measure:

25

Liquid pressure depends on:

26

Liquid pressure increases with:

27

Which liquid produces more pressure at same depth?

28

Pascal’s Law states that pressure applied to a confined liquid:

29

Hydraulic machines work on:

30

Which is an application of Pascal’s Law?

31

Why do camels have wide feet?

32

Pressure at the bottom of a lake is:

33

Which factor does not affect liquid pressure?

34

What happens to pressure if force doubles and area halves?

35

What is meant by work done in physics?

36

Which formula represents work done?

37

If force is applied but no displacement occurs, the work done is:

38

The SI unit of work is:

39

Energy is defined as:

40

Which of the following is a form of energy?

41

Energy possessed by a moving object is called:

42

Kinetic energy depends on:

43

Which object has maximum kinetic energy?

44

Energy stored due to height is called:

45

Gravitational potential energy depends on:

46

Which unit is used for energy?

47

When a body falls freely, its potential energy is converted into:

48

Which law states that energy cannot be created or destroyed?

49

According to conservation of energy, total energy remains:

50

A machine that works without energy loss is called:

51

Perpetual motion machines are impossible because they violate:

52

Which of the following is a renewable energy source?

53

Which energy source is non-renewable?

54

Energy obtained from flowing water is called:

55

Which energy source causes air pollution?

56

Power is defined as:

57

The SI unit of power is:

58

If more work is done in less time, power will be:

59

Efficiency of a machine is always:

60

Efficiency is the ratio of:

61

Energy losses mainly occur due to:

62

What is density?

63

Which formula represents density?

64

What is the SI unit of density?

65

Which quantity is needed to calculate density?

66

Which instrument is commonly used to measure mass?

67

How is the volume of an irregular solid measured?

68

Which apparatus is used to measure volume of liquids?

69

Density of a substance depends on:

70

Which state of matter has a fixed shape?

71

Which state of matter has no fixed volume?

72

Which state of matter has particles very close together?

73

Which state of matter has the weakest intermolecular forces?

74

What is plasma?

75

Which is an example of plasma?

76

Particle model of matter explains:

77

According to particle model, particles of matter are:

78

What happens to particle motion when temperature increases?

79

Temperature is a measure of:

80

Which instrument is used to measure temperature?

81

Which scale is commonly used in laboratories?

82

Lower fixed point of a Celsius thermometer is:

83

Upper fixed point of a Celsius thermometer is:

84

Calibration of thermometer means:

85

Which liquid is commonly used in a liquid-in-glass thermometer?

86

Why is mercury suitable for thermometers?

87

Sensitivity of thermometer depends on:

88

Range of thermometer means:

89

Linearity of thermometer means:

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