Top 1000+ Solved Physics MCQ Questions Answer

From 826 to 840 of 1211

Q. The atmosphere is heated mainly by –

a. Insulation

b. Conduction

c. Radiation

d. Convection

  • c. Radiation

Q. The atmospheric layer reflecting radiowaves is called –

a. Ozonosphere

b. Ionosphere

c. Stratosphere

d. Mesosphere

  • b. Ionosphere

Q. 'Cryogenics' is a science dealing with –

a. high temperatures

b. low temperatures

c. friction and wear

d. growth of crystals

  • b. low temperatures

Q. Heat from the Sun reaches the Earth by

a. Reflection

b. Conduction

c. Radiation

d. Convection

  • c. Radiation

Q. The commonly used thermometricsubstance is _____.

a. mineral oil

b. Alcohol

c. Mercury

d. Petrol

  • c. Mercury

Q. Gamma rays can cause –

a. gene mutation

b. sneezing

c. burning

d. fever

  • a. gene mutation

Q. The dimension of which of the followingis the same as that of impulse?

a. Volume

b. Momentum

c. Torque

d. Change in the rate of momentum

  • b. Momentum

Q. Which among the following is thefundamental quantity?

a. Volume

b. Time

c. Velocity

d. Force

  • b. Time

Q. Global warming is expected to result in

a. Increase in level of sea

b. Change in crop pattern

c. Change in coast line

d. All of the above

  • d. All of the above

Q. A transformer works on the principleof –

a. Self induction

b. Mutual induction

c. Generator

d. Inverter

  • b. Mutual induction

Q. When we hear a sound, we can identify its source from             .

a. wave length of sound

b. the overtones present in the sound

c. the intensity of sound

d. the amplitude of sound

  • b. the overtones present in the sound

Q. What are the two kinds of Rotatory motion?

a. Spin and Vibrational motion

b. Spin and Orbital motion

c. Spin and Translatory motion

d. Spin and Projectile motion

  • b. Spin and Orbital motion

Q. If lift is going up with acceleration, the apparent weight of a body is -

a. may be more or less than true weight

b. equal to the true weight

c. less than the true weight

d. more than the true weight

  • d. more than the true weight

Q. A galvanometer can be converted into a voltmeter by connecting with it a –

a. high resistance in parallel

b. low resistance on parallel

c. high resistance on series

d. low resistance in series

  • c. high resistance on series

Q. One nanometer is equal to             meters.

a. 10 raised to the power (-3)

b. 10 raised to the power (-6)

c. 10 raised to the power (-9)

d. 10 raised to the power (-12)

  • c. 10 raised to the power (-9)
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