Physics Practice MCQ Page 20

Multiple Choice questions for Physics in the sets of 10 each on one page with questions and answers. All sets are useful in the preparation of subject tests for employment or admission.
Question: 517   To allow the body to oscillate with a measurably large amplitude under the influence of an external periodic force
  1. m should be small and F should be large
  2. m should be large and F should be small
  3. F/m should be small
  4. w should be very large compared to w0
Question: 518   An automobile sounding its horn is moving away from an observer. The pitch of the horn's sound relative to its normal pitch is
  1. higher
  2. lower
  3. the same
  4. higher or lower depending upon the exact frequency
Question: 519   Ultrasonic sound waves
  1. can be heard by a normal human ear
  2. can be heard with the help of hearing apparatus
  3. cannot be heard
  4. can be heard with the help of microphone
Question: 520   In stationary wave
  1. all the particles perform simple harmonic motion
  2. all the particles between two adjacent nodes vibrate in phase
  3. the amplitude of particle vibration at an anti node is equal to that of either component wave
  4. Particles on opposite sides of a node vibrate with a phase difference of
Question: 521   Assertion (A): Diffraction of sound waves is more evident in daily experience than that of light waves. Reason (R): Sound waves are longitudinal, while light waves are transverse.
  1. Both A and R correct and R is the correct explanation of A
  2. Both A and R correct but R is the correct explanation of A
  3. A is correct,but R is incorrect
  4. A is incorrect but R is correct
Question: 522   A tuning fork when sounded together with a tuning fork of frequency 256 emits two beats. On loading the tuning fork of frequency 256, the number of beats heard are 1 per second. The frequency of the tuning fork is
  1. 257
  2. 258
  3. 256
  4. 254
Question: 523   Two organ pipes of same dimensions are filled with hydrogen and oxygen respectively. If oxygen is 16 times heavier than hydrogen the ratio of the fundamental frequencies of the two organ pipes (assuming the elasticities of gases to be nearly equal)will be
  1. 16:1
  2. 1:1
  3. 4:1
  4. 5:1
Question: 524   Assertion (A): Solids can transmit both longitudinal and transverse wave. Reason (R):They resist changes in volume but not changes of shape.
  1. Both A and R are correct and R is the correct explanation of A
  2. Both A and R are correct, but R is not the correct explanation of A
  3. A is correct, but R is incorrect
  4. A is incorrect, but R is correct
Question: 525   In order to achieve good acoustic property, a hall should have
  1. zero reverberation
  2. small but non-zero
  3. large reverberation
  4. none of the above is correct
Question: 526   A point on the crest of a transverse wave shall reach the trough after time
  1. T/4
  2. T/2
  3. 3T/4
  4. T
Question: 527   Two gases A and B having the same temperature T, same pressure P and same volume V are mixed. If the mixture is at the same temperature T and occupies a volume V, the pressure of the mixture is
  1. 2P
  2. P
  3. P/2
  4. 4/P
Question: 528   According to the first law of thermodynamics
  1. Reducing pressure on liquids lowers the boiling point
  2. Evaporation is a cooling process
  3. A gas heats when compressed
  4. There is a mechanical equivalent of heat

Answers to the questions of Physics on this page

Following list gives the correct choice for the answer of the Physics mcqs.
517 . A       518 . B       519 . C       520 . C       521 . B       522 . D       523 . C       524 . D       525 . B       526 . A       527 . B       528 . C      

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