An isolated solid metallic sphere is given +Q charge. The charge will be distributed on the sphere
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(a) Uniformly but only on surface |
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(b) Only on surface but non-uniformly |
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(c) Uniformly inside the volume |
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(d) Non-uniformly inside the volume |
(a) Uniformly but only on surface
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A monochromatic beam of light passes from a denser medium into a rarer medium. As a result
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(a) Its velocity increases |
(b) Its velocity decreases |
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(c) Its frequency decreases |
(d) Its wavelength decreases |
A light ray from air is incident (as shown in figure) at one end of a glass fiber (refractive index m = 1.5) making an incidence angle of 60o on the lateral surface, so that it undergoes a total internal reflection. How much time would it take to traverse the straight fiber of length 1 km
| (a) 3.33 m sec | (b) 6.67 m sec | (c) 5.77 m sec | (d) 3.85 m sec |
Figure shows the ray diagram of a:
Quantam nature of light is explained by which of the following phenomenon
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(a) Huygen wave theory |
(b) Photoelectric effect |
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(c) Maxwell electromagnetic theory |
(d) de-Broglie theory |
Peltier coefficient for the junction of a pair of metals is proportional to
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(a) T absolute temperature of the junction |
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(b) Square of absolute temperature of the junction |
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(c) |
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(d) |
