Explanation:
In Image formation from spherical mirrors, only paraxial rays are considered because they form nearly a point Image of a point source. Angle of Incidence of Paraxial rays is very small.
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The direction of the null points is on the equatorial line of a bar magnet, when the north pole of the magnet is pointing
|
(a) North |
(b) South |
(c) East |
(d) West |
A thin convex lens of focal length 10 cm is placed in contact with a concave lens of same material and of same focal length. The focal length of combination will be
|
(a) Zero |
(b) Infinity |
(c) 10 cm |
(d) 20 cm |
$\frac{1}{2}\text{m}\omega^2\text{A}^2$
$\frac{1}{4}\text{m}\omega^2\text{A}^2$
$\text{m}\omega^2\text{A}^2$
$\text{Zero}$
The chemical equivalent of silver is 108. If the current in a silver voltameter is 2 Amp., the time required to deposit 27 grams of silver will be
|
(a) 8.57 hrs |
(b) 6.70 hrs |
(c) 3.35 hrs |
(d) 12.50 hrs |
The dependence of binding energy per nucleon, 
on the mass number, A, is represented by
|
(a)
|
(b)
|
(C)
|
(d)
|
