White light is passed through a prism whose angle is 5°. If the refractive indices for rays of red and blue colour are respectively 1.64 and 1.66, the angle of deviation between the two colours will be
|
(a) 0.1 degree |
(b) 0.2 degree |
(c) 0.3 degree |
(d) 0.4 degree |
(a) 0.1 degree
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For a nucleus to be stable, the correct relation between neutron number N and Proton number Z is
|
(a) N > Z |
(b) N = Z |
(c) N < Z |
(d) N ≥ Z |
The distance between the extreme points on the periphery of the mirror is called:
If the distance between a point source and screen is doubled, then intensity of light on the screen will become
|
(a) Four times |
(b) Double |
(c) Half |
(d) One-fourth |
The phase difference between input and output voltages of a CE circuit is
|
(a) 0o |
(b) 90o |
(c) 180o |
(d) 270o |
Which one is reverse-biased
|
(a)
|
(b)
|
(c)
|
(d)
|
A man cannot see clearly the objects beyond a distance of 20 cm from his eyes. To see distant objects clearly he must use which kind of lenses and of what focal length
|
(a) 100 cm convex |
(b) 100 cm concave |
(c) 20 cm convex |
(d) 20 cm concave |
