Assertion : Diamond glitters brilliantly.
Reason : Diamond does not absorb sunlight.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.
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The optical path of a monochromatic light is same if it goes through 4.0 cm of glass or 4.5 cm of water. If the refractive index of glass is 1.53, the refractive index of the water is
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(a) 1.30 |
(b) 1.36 |
(c) 1.42 |
(d) 1.46 |
The retarding potential for having zero photo-electron current
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(a) Is proportional to the wavelength of incident light |
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(b) Increases uniformly with the increase in the wavelength of incident light |
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(c) Is proportional to the frequency of incident light |
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(d) Increases uniformly with the increase in the frequency of incident light wave |
$=\text{R}$
$\le\text{R}$
$>\text{R}$
$\ge\text{R}$
The current in the given circuit is
|
(a) 0.1 A |
(b) 0.2 A |
(c) 0.3 A |
(d) 0.4 A |
The electric potential inside a conducting sphere
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(a) Increases from centre to surface |
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(b) Decreases from centre to surface |
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(c) Remains constant from centre to surface |
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(d) Is zero at every point inside |
Three charges Q(+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. If the net electrostatic energy of the system is zero, then Q is equal to
|
(a) |
(b) (-q) |
(c) (+q) |
(d) Zero |
The refractive indices of violet and red light are 1.54 and 1.52 respectively. If the angle of prism is 10°, then the angular dispersion is
|
(a) 0.02 |
(b) 0.2 |
(c) 3.06 |
(d) 30.6 |
