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Assertion : The refractive index of diamond is 
and that of liquid is 
. If the light travels from diamond to the liquid, it will totally reflected when the angle of incidence is 30o.
Reason : μ = 
where m is the refractive index of diamond with respect to liquid.
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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 assertion is false but reason is true. |
$\text{A}\omega^2$
$\frac{\text{A}\omega^2}{2}$
$\frac{\text{A}\omega^2}{\sqrt{2}}$
$\text{Zero}.$
In a step-up transformer, the turn ratio is 1 : 2. A Leclanche cell (e.m.f. 1.5V) is connected across the primary. The voltage developed in the secondary would be
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(a) 3.0 V |
(b) 0.75 V |
(c) 1.5 V |
(d) Zero |
The motion of planets in the solar system is an example of conservation of
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(a) Mass |
(b) Momentum |
(c) Angular momentum |
(d) Kinetic energy |