Deviation of 5° is observed from a prism whose angle is small and whose refractive index is 1.5. The angle of prism is
|
(a) 7.5° |
(b) 10° |
(c) 5° |
(d) 3.3° |
(b) 10°
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In the given figure, potential difference between A and B is
|
(a) 0 |
(b) 5 volt |
(c) 10 volt |
(d) 15 volt |
Curie is a unit of
|
(a) Length |
(b) It is not any unit |
(c) Activity |
(d) Atomic number |
Light passes successively through two polarimeters tubes each of length 0.29m. The first tube contains dextro rotatory solution of concentration 60kgm–3 and specific rotation 0.01rad m2kg–1. The second tube contains laevo rotatory solution of concentration 30kg/m3 and specific rotation 0.02 radm2kg–1. The net rotation produced is
|
(a) 15° |
(b) 0° |
(c) 20° |
(d) 10° |
The electromagnetic waves travel with a velocity
|
(a) Equal to velocity of sound |
(b) Equal to velocity of light |
|
(c) Less than velocity of light |
(d) None of these |
Use of eddy currents is done in the following except
|
(a) Moving coil galvanometer |
(b) Electric brakes |
|
(c) Induction motor |
(d) Dynamo |