A magnet when placed perpendicular to a uniform field of strength 
experiences a maximum couple of moment 4 
. What is its magnetic moment
|
(a) 0.4 |
(b) 0.2 |
(c) 0.16 |
(d) 0.04 |
(a) 0.4 
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A ray of monochromatic light is incident on one refracting face of a prism of angle 75°. It passes through the prism and is incident on the other face at the critical angle. If the refractive index of the material of the prism is 
, the angle of incidence on the first face of the prism is
|
(a) 30° |
(b) 45° |
(c) 60° |
(d) 0° |
A beam of ions with velocity 2 
enters normally into a uniform magnetic field of 4
If the specific charge of the ion is 5 
, then the radius of the circular path described will be
|
(a) 0.10 m |
(b) 0.16 m |
(c) 0.20 m |
(d) 0.25 m |
If you are provided three resistances 2 W, 3 W and 6 W. How will you connect them so as to obtain the equivalent resistance of 4 W
|
(a)
|
(b)
|
(c)
|
(d) None of these |
