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Half Book 2

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139
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1

What is meant by work done in physics?

2

Which formula represents work done?

3

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

4

The SI unit of work is:

5

Energy is defined as:

6

Which of the following is a form of energy?

7

Energy possessed by a moving object is called:

8

Kinetic energy depends on:

9

Which object has maximum kinetic energy?

10

Energy stored due to height is called:

11

Gravitational potential energy depends on:

12

Which unit is used for energy?

13

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

14

Which law states that energy cannot be created or destroyed?

15

According to conservation of energy, total energy remains:

16

A machine that works without energy loss is called:

17

Perpetual motion machines are impossible because they violate:

18

Which of the following is a renewable energy source?

19

Which energy source is non-renewable?

20

Energy obtained from flowing water is called:

21

Which energy source causes air pollution?

22

Power is defined as:

23

The SI unit of power is:

24

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

25

Efficiency of a machine is always:

26

Efficiency is the ratio of:

27

Energy losses mainly occur due to:

28

What is density?

29

Which formula represents density?

30

What is the SI unit of density?

31

Which quantity is needed to calculate density?

32

Which instrument is commonly used to measure mass?

33

How is the volume of an irregular solid measured?

34

Which apparatus is used to measure volume of liquids?

35

Density of a substance depends on:

36

Which state of matter has a fixed shape?

37

Which state of matter has no fixed volume?

38

Which state of matter has particles very close together?

39

Which state of matter has the weakest intermolecular forces?

40

What is plasma?

41

Which is an example of plasma?

42

Particle model of matter explains:

43

According to particle model, particles of matter are:

44

What happens to particle motion when temperature increases?

45

Temperature is a measure of:

46

Which instrument is used to measure temperature?

47

Which scale is commonly used in laboratories?

48

Lower fixed point of a Celsius thermometer is:

49

Upper fixed point of a Celsius thermometer is:

50

Calibration of thermometer means:

51

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

52

Why is mercury suitable for thermometers?

53

Sensitivity of thermometer depends on:

54

Range of thermometer means:

55

Linearity of thermometer means:

56

Which property of a magnet causes it to attract iron?

57

Which are the two ends of a magnet called?

58

Like magnetic poles will:

59

Unlike magnetic poles will:

60

Which material can be magnetized easily?

61

Which of the following is a non-magnetic material?

62

Magnetism produced in an unmagnetized material is called:

63

Which magnet loses its magnetism easily?

64

Steel is commonly used to make permanent magnets because it:

65

Which material is suitable for making electromagnets?

66

The region around a magnet where magnetic force is felt is called:

67

Magnetic field lines always emerge from:

68

Magnetic field lines enter the magnet at:

69

Magnetic field lines never:

70

The closeness of magnetic field lines indicates:

71

Which device is used to detect the direction of magnetic field?

72

Iron filings are used to:

73

The magnetic field inside a magnet is directed from:

74

Which of the following is a use of permanent magnets?

75

An electromagnet works on the principle of:

76

The strength of an electromagnet can be increased by:

77

Which magnet can be switched ON and OFF?

78

Domain theory explains magnetism due to:

79

In an unmagnetized material, magnetic domains are:

80

Ferromagnetic materials are:

81

Which of the following is a ferromagnetic material?

82

Paramagnetic materials are:

83

Diamagnetic materials are:

84

Which of the following is diamagnetic?

85

The Earth behaves like:

86

The direction of Earth’s magnetic field is from:

87

A compass needle aligns itself along:

88

Which application uses magnetism in data storage?

89

Magnetic shielding is used to:

90

Which material is commonly used for magnetic shielding?

91

What is physics mainly the study of?

92

Which of the following is included in physics?

93

Physics studies matter, energy, space, and ____.

94

Which branch deals with motion and forces?

95

Which sub-field of physics studies heat?

96

Which field of physics studies light?

97

The study of sound comes under which branch?

98

Which sub-field deals with electric charges?

99

Physics is a part of which group of sciences?

100

Which of the following is a physical science?

101

Who studies physics professionally?

102

What is one major role of physicists?

103

Physicists mainly try to understand ____.

104

Science is best described as a ____ process.

105

In science, researchers usually share their results through ____.

106

What is a hypothesis?

107

A hypothesis is usually based on ____.

108

Which comes first in scientific study?

109

What is a scientific theory?

110

A scientific law describes ____.

111

Which statement best defines a scientific law?

112

Which is more general?

113

Falsifiability means a scientific statement must be ____.

114

Which statement is falsifiable?

115

Why is falsifiability important in science?

116

Which of the following is not science?

117

Technology mainly focuses on ____.

118

Engineering is mainly concerned with ____.

119

Which one converts scientific ideas into practical devices?

120

Physics contributes most directly to which field?

121

Which of the following best represents collaboration in science?

122

Scientific knowledge grows mainly through ____.

123

Which is NOT a sub-field of physics?

124

Astrophysics mainly studies ____.

125

Atomic physics deals with ____.

126

Nuclear physics studies ____.

127

Which term refers to careful study of nature?

128

Physics laws are usually expressed in the form of ____.

129

Which quality is essential for a physicist?

130

Which of the following best defines science?

131

Which term describes repeated testing of ideas?

132

Which is NOT a characteristic of scientific method?

133

Scientific laws are valid as long as they are ____.

134

Which one explains natural events?

135

Engineering differs from science because it focuses on ____.

136

Which is an example of technology?

137

Which statement is true about science?

138

Which of the following is an application of physics?

139

Physics helps us understand the universe by using ____.

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