- Aare transverse waves
- ✓have quantum nature
- Chave dual nature
- Dare electromagnetic waves
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The reason for shining of air bubble in water is
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(a) Diffraction of light |
(b) Dispersion of light |
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(c) Scattering of light |
(d) Total internal reflection of light |
In order to increase the sensitivity of a moving coil galvanometer, one should decrease
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(a) The strength of its magnet |
(b) The torsional constant of its suspension |
|
(c) The number of turns in its coil |
(d) The area of its coil |
A glass rod rubbed with silk is used to charge a gold leaf electroscope and the leaves are observed to diverge. The electroscope thus charged is exposed to X-rays for a short period. Then
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(a) The divergence of leaves will not be affected |
|
(b) The leaves will diverge further |
|
(c) The leaves will collapse |
|
(d) The leaves will melt |
In an electron gun, the electrons are accelerated by the potential V. If e is the charge and m is the mass of an electron, then the maximum velocity of these electrons will be
|
(a) |
(b) |
(c) |
(d) |