101. Laser is a device for producing
spontaneous radiation
dispersed radiation
scattered radiation
stimulated radiation
102. Pendulum clock becomes slow in summer because
days in summer are large
of the friction in the coil
the length of the pendulum increases
the weight of the pendulum changes
103. Homi Bhabha Award is given for special contribution in the field of
Theoretical Physics
Nuclear Energy
Laser Physics
Space Research
104. When ice melts, the
volume increases
volume decreases
mass increases
mass decreases
105. The mirror used by a dentist to examine the teeth of patients is
Concave
Convex
Plane
Cylindrical
106. Wireless communication is reflected to the earth's surface by
Troposphere
Stratosphere
Ionosphere
Exosphere
107. What type of electromagnetic radiation is used in the remote control of a television?
Infrared
Ultraviolet
Visible
None of the above
108. The radiation that is absorbed by ozone present in the atmosphere is
Infrared
Visible
Ultraviolet
Microwave
109. Sound above what level (in decibels) is considered hazardous noise pollution?
30 dB
40 dB
60 dB
80 dB
110. To look at the total image of a person, the minimum height of a plane mirror is
Equal to the height of a person
Half of the height of a person
One-fourth of the height of a person
Two times the height of a person
111. Homi Bhabha Prize is given for the special contribution in which of the following fields?
Theoretical Physics
Nuclear Energy
Laser Physics
Space Research
112. Sound Waves do not travel in
Solids
Liquids
Gases
Vacuum
113. 'Pyrheliometer' is used for measuring
sun spots
solar radiation
air temperature
temperature of plants
114. Which of the following is a semiconductor?
Plastic
Aluminium
Wood
Germanium
115. Normal temperature of a human body is 98.4ºF. Its equivalent temperature in ºC is
40.16
36.89
35.72
32.36
116. How many calories are gained by drinking a glass of water?
Zero
15
25
50
117. Blue colour of the sky is due to
scattering of light
dispersion of light
interference of light
emission of more blue light as compared to other colours by the sun
118. The mirror used by the dentists to see the teeth of the patients is
convex
concave
plane
none of these
119. Which one of the following thermometers is known as pyrometer?
Thermoelectric thermometer
Radiation thermometer
Gas thermometer
Liquid thermometer
120. ‘Dynamo’ is a device which converts
chemical energy into electrical energy
electrical energy into mechanical energy
mechanical energy into electrical energy
electrical energy into chemical energy
12 Total Test
360 Total Question
Scientifically designed for PCS
A must have for Civil services aspirant
IAS PCS SCC and others
75 Total Test
2250 Total Question
Scientifically designed for PCS
A must have for Civil services aspirant
IAS PCS SCC and others
69 Total Test
2070 Total Question
Scientifically designed for PCS
A must have for Civil services aspirant
Timer for time management
