MCQOPTIONS
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MCQOPTIONS
This section includes 168 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
As we go from Equator to North pole the value of g , the acceleration due to gravity |
| A. | remains the same |
| B. | decreases |
| C. | increases |
| D. | None of the above |
| Answer» D. None of the above | |
| 102. |
A fuse wire is made of: |
| A. | an alloy of tin and copper |
| B. | an alloy of tin and lead |
| C. | an alloy of tin and aluminium |
| D. | an alloy of nickel and chromium |
| Answer» C. an alloy of tin and aluminium | |
| 103. |
A transformer works with |
| A. | alternating current only |
| B. | direct current only |
| C. | both AC and DC |
| D. | any signal |
| Answer» B. direct current only | |
| 104. |
Fat can be separated from milk in a cream separator because of: |
| A. | Cohesive force |
| B. | Gravitational force |
| C. | Centripetal force |
| D. | Centrifugal force |
| Answer» E. | |
| 105. |
An instrument used to measure humidity is: |
| A. | Anemometer |
| B. | Hygrometer |
| C. | Thermometer |
| D. | Pyrheliometer |
| Answer» C. Thermometer | |
| 106. |
Direct conversion of solar energy with the use of a photo voltaic cell results in the production of |
| A. | Optical energy |
| B. | Electrical energy |
| C. | Thermal energy |
| D. | Mechanial energy |
| Answer» C. Thermal energy | |
| 107. |
Ultra violet light of Sun s radiation is prevented from reaching the earth s atmosphere by the layer of |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Ozone |
| D. | Helium |
| Answer» D. Helium | |
| 108. |
The Newton s First Law is also called as |
| A. | Law of moments |
| B. | Law of inertia |
| C. | Law of energy |
| D. | Law of momentum |
| Answer» C. Law of energy | |
| 109. |
Metal tea pots have wooden handles because |
| A. | wood is a bad conductor of heat |
| B. | it prevents electric shock |
| C. | it gives beauty to the pots |
| D. | it is hygienic |
| Answer» C. it gives beauty to the pots | |
| 110. |
The temperature of boiling water in a steam engine may be high because : |
| A. | there are dissolved substances in water |
| B. | there is low pressure inside the boiler |
| C. | there is high pressure inside the boiler |
| D. | the fire is at very high temperature |
| Answer» D. the fire is at very high temperature | |
| 111. |
The energy that can harness heat stored below the earth s surface is known as ; |
| A. | thermal energy |
| B. | nuclear energy |
| C. | tidal energy |
| D. | geo-thermal energy |
| Answer» E. | |
| 112. |
A man cannot see clearly beyond 10 meters. The disease he suffers from : |
| A. | Far sight |
| B. | Myopia |
| C. | Cataract |
| D. | Hypermetropia |
| Answer» C. Cataract | |
| 113. |
How much mechanical work must be done to completely melt 1 gram of ice at 0 C ? |
| A. | 4.2 J |
| B. | 80 J |
| C. | 336 J |
| D. | 2268 J |
| Answer» C. 336 J | |
| 114. |
Hydraulic brakes work on the principle of |
| A. | Pascal s law |
| B. | Thomson s law |
| C. | Newton s law |
| D. | Bernoulli s theorem |
| Answer» B. Thomson s law | |
| 115. |
A new technology which provides the ability to create an artificial world and have people interact with it is called : |
| A. | Televirtuality |
| B. | Virtual reality |
| C. | Alternate reality |
| D. | 3-D reality |
| Answer» C. Alternate reality | |
| 116. |
The four stroke petrol engine is based on |
| A. | Carnot-cycle |
| B. | Otto-cycle |
| C. | Diesel-cycle |
| D. | Boyle s-cycle |
| Answer» C. Diesel-cycle | |
| 117. |
For a person having hypermetropia, the near point is |
| A. | greater than 25 cm |
| B. | greater than 50 cm |
| C. | less than 25 cm |
| D. | infinity |
| Answer» B. greater than 50 cm | |
| 118. |
A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focussed in his eyes |
| A. | behind the retina |
| B. | in front of the retina |
| C. | on the retina |
| D. | on the blind spot |
| Answer» C. on the retina | |
| 119. |
Persistance of vision is the principle behind |
| A. | Camera |
| B. | Spectroscope |
| C. | Cinema |
| D. | Periscope |
| Answer» D. Periscope | |
| 120. |
The light rays used for eliminating bacteria |
| A. | X-rays |
| B. | infrared rays |
| C. | microwave radiation |
| D. | ultra-violet radiation |
| Answer» E. | |
| 121. |
Sun s heat reaches us by |
| A. | Conduction |
| B. | Convection |
| C. | Radiation |
| D. | Reflection |
| Answer» D. Reflection | |
| 122. |
Myopia is the same as |
| A. | Near sightedness |
| B. | Astigmatism |
| C. | Presbyopia |
| D. | Long sightedness |
| Answer» B. Astigmatism | |
| 123. |
What is the principle of a Life Jacket ? |
| A. | It provides oxygen to a drowning person |
| B. | It increases the volume of the person to keep him afloat |
| C. | It decreases the volume of the person to keep him afloat |
| D. | The person can sit on it like a raft |
| Answer» C. It decreases the volume of the person to keep him afloat | |
| 124. |
Necessary element of change in solar energy to electric energy |
| A. | Berillium |
| B. | Silicon |
| C. | Tantelum |
| D. | Pure Copper |
| Answer» C. Tantelum | |
| 125. |
The owl can see most clearly in total darkness because |
| A. | it has squint eyes |
| B. | it has large eyes with orbs directed forward, giving it binocular sight |
| C. | it has light bulbs in its eyes provided by nature |
| D. | it produces infrasonic sounds |
| Answer» C. it has light bulbs in its eyes provided by nature | |
| 126. |
Steam at 1000C causes more severe burns than water at 100 C because |
| A. | steam has no specific heat capacity |
| B. | steam has latent heat of vaporisation |
| C. | water has no specific heat capacity |
| D. | water has latent heat of fusion |
| Answer» C. water has no specific heat capacity | |
| 127. |
Radio activity is due to |
| A. | unstable nucleus |
| B. | stable nucleus |
| C. | stable electronic configu-ration |
| D. | stable electronic configu-ration |
| Answer» B. stable nucleus | |
| 128. |
Lambert s law is related to |
| A. | Reflection |
| B. | Refraction |
| C. | Interference |
| D. | Illumination |
| Answer» E. | |
| 129. |
'Shock-absorbers' are usually made of steel as it : |
| A. | is not brittle |
| B. | has lower elasticity |
| C. | has higher elasticity |
| D. | has no ductile property |
| Answer» D. has no ductile property | |
| 130. |
Mirage is an example of |
| A. | refraction of light only |
| B. | total internal, reflection of light only |
| C. | refraction and total internal reflection of light |
| D. | dispersion of light only |
| Answer» D. dispersion of light only | |
| 131. |
The phenomenon of light associated with the appear-ance of blue colour of the sky is |
| A. | Interference |
| B. | Reflection |
| C. | Refraction |
| D. | Scattering |
| Answer» E. | |
| 132. |
When a person walking in bright Sunlight enters a dark room, heis not able to see clearly for a little while because |
| A. | the eye muscles cannot immediately adjust the focal length of the eye lens. |
| B. | the retina retains the bright images for sometime and becomes momentarily insensitive. |
| C. | the iris is unable to contract the pupil immediately. |
| D. | the iris is unable to dilate the pupil immediately. |
| Answer» E. | |
| 133. |
Which one of the following lenses should be used to correct the defect of astigmatism ? |
| A. | Cylindrical lens |
| B. | Concave lens |
| C. | Convex lens |
| D. | Bifocal lens |
| Answer» B. Concave lens | |
| 134. |
What is the full form of AM regarding radio broadcasting? |
| A. | Amplitude Movement |
| B. | Anywhere Movement |
| C. | Amplitude Matching |
| D. | Amplitude Modulation |
| Answer» E. | |
| 135. |
Fleming s right hand rule is used to find the direction of the |
| A. | Alternate current |
| B. | Direct current |
| C. | Induced current |
| D. | Actual current |
| Answer» D. Actual current | |
| 136. |
Which layer of the earth s atmosphere reflect back the radio waves to the earth s surface ? |
| A. | ionosphere |
| B. | stratosphere |
| C. | mesosphere |
| D. | exosphere |
| Answer» B. stratosphere | |
| 137. |
Which of the following principle is used to produce low-temperatures ? |
| A. | Super conductivity |
| B. | Joule-Kelvin effect |
| C. | Thermo-electric effect |
| D. | Adiabatic demagneti-sation |
| Answer» E. | |
| 138. |
The ozone hole that has been detected lies in the atmosphere above |
| A. | Arctic Ocean |
| B. | Antarctica |
| C. | India |
| D. | Alaska |
| Answer» C. India | |
| 139. |
If input frequency of a full wave |
| A. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>n</center></td></tr><tr><td style="text-align: center;">2</td></tr></table> |
| B. | n |
| C. | <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>3n</center></td></tr><tr><td style="text-align: center;">2</td></tr></table> |
| D. | 2n |
| Answer» E. | |
| 140. |
Cloudy nights are warmer compared nights, because clouds mainly |
| A. | absorb heat from the atmosphere send it towards earth |
| B. | prevent cold waves from the sky descending on earth |
| C. | reflect back the heat given by earth |
| D. | produce heat and radiate it toward earth |
| Answer» D. produce heat and radiate it toward earth | |
| 141. |
Therm is the unit of |
| A. | power |
| B. | heat |
| C. | light |
| D. | distance |
| Answer» C. light | |
| 142. |
Atomic power plant works on the principle of |
| A. | fission |
| B. | fusion |
| C. | thermal combustion |
| D. | combined effect of all the above three |
| Answer» B. fusion | |
| 143. |
When a body is taken from earth to moon |
| A. | mass changes but weight remains same |
| B. | weight changes but mass remains same |
| C. | both weight and mass change |
| D. | both weight and mass remain same |
| Answer» C. both weight and mass change | |
| 144. |
Which of the following circuit elements is used to block DC in an electronic circuit ? |
| A. | Resistances |
| B. | Capacitance |
| C. | Inductance |
| D. | Diode |
| Answer» C. Inductance | |
| 145. |
Spectacles used for viewing 3D films have |
| A. | Bifocal lens |
| B. | Convex lens |
| C. | Concave lens |
| D. | Polaroids |
| Answer» E. | |
| 146. |
The process involved in making soap is |
| A. | saponification |
| B. | hydrolysis |
| C. | condensation |
| D. | polymerisation |
| Answer» B. hydrolysis | |
| 147. |
Newton s first law of motion gives the concept of |
| A. | energy |
| B. | work |
| C. | momentum |
| D. | inertia |
| Answer» E. | |
| 148. |
Clothes keep us warm in winter because they : |
| A. | supply heat |
| B. | do not radiate heat |
| C. | prevent air from contacting the body |
| D. | prevent the heat of the body from escaping |
| Answer» E. | |
| 149. |
Which of the following is a nonrenewable source of energy ? |
| A. | Biogas |
| B. | Solar |
| C. | Wind |
| D. | Coal |
| Answer» E. | |
| 150. |
The speed of light with the rise in the temperature of the medium : |
| A. | Increases |
| B. | Decreases |
| C. | Remains unaltered |
| D. | Drops suddenly |
| Answer» D. Drops suddenly | |