AJKPSC-PMS Paper Physics 2001 MCQs

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Showing 1451–1460 of 15721 MCQs Page 146 / 1573

1451

In the set up shown the two slits S1 and S2 are not equidistant from the source S. The central fringe at O is then

A. either dark or bright depending on the position of S B. always bright C. neither dark nor bright D. always dark

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1452

Conditions for interference are that the two sources should be coherent and :

A. At a far-off distance B. Coinciding C. At 10 m distant from each other D. Close together

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1453

4. Which phenomenon can be observed with light waves, but not with sound waves?

A. Polarisation B. Reflection C. Diffraction D. Refraction

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1454

A band of musicians is playing in the main street of a town. A person in the side street is most likely to hear prominently

A. both low and high pitched instruments equally prominently B. low pitched instruments only C. high pitched instruments only D. none of the instruments

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1455

Two sources of waves are called coherent if

A. both have the same amplitude of vibrations B. both produce waves of the same wavelength having a constant phase difference C. both produce waves having the same velocity D. both produce waves of the same wavelengths

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1456

The condition for constructive interference of two coherent beams is that the path difference should be

A. even integral multiple of λ/2 B. integral multiple of λ C. integral multiple of λ/2 D. odd integral multiple of λ/2

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1457

In case of constructive interference of two waves, the amplitude of the resultant wave is ______ either of the waves:

A. Greater than B. Equal to C. Smaller than D. None of these

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1458

In case of YDS experiment, the distance between adjacent bright fringes is given by:

A. Ay = λL/d B. Ay = λd/L C. Ay = dL/λ D. None of these

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1459

In Young's double-slit experiment, for which colour the fringe width is least?

A. Red B. Green C. Blue D. Yellow

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1460

In Michelson's Interferometer, the movable mirror is moved by 0.5000 mm and shift of 200 fringes is observed, the wavelength for light used is:

A. 5 × 10^-6 m B. 5 × 10^-7 m C. None of above D. 5 × 10^4 m

Report

In the set up shown the two slits S1 and S2 are not equidistant from the source S. The central fringe at O is then

Conditions for interference are that the two sources should be coherent and :

4. Which phenomenon can be observed with light waves, but not with sound waves?

A band of musicians is playing in the main street of a town. A person in the side street is most likely to hear prominently

Two sources of waves are called coherent if

The condition for constructive interference of two coherent beams is that the path difference should be

In case of constructive interference of two waves, the amplitude of the resultant wave is ______ either of the waves:

In case of YDS experiment, the distance between adjacent bright fringes is given by:

In Young's double-slit experiment, for which colour the fringe width is least?

In Michelson's Interferometer, the movable mirror is moved by 0.5000 mm and shift of 200 fringes is observed, the wavelength for light used is:

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