- APerpendicular to the field.
- BFrom stronger to the weaker parts of the field.
- CFrom weaker to the stronger parts of the field.
- DNone of these.
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In hydrogen atom, the electron is making 6.6 around the nucleus in an orbit of radius 0.528 Å. The magnetic moment
will be
|
(a) 1 |
(b) 1 |
(c) 1 |
(d) 1 |
Assertion : Diamond glitters brilliantly.
Reason : Diamond does not absorb sunlight.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
A ray of light incident normally on an isosceles right angled prism travels as shown in the figure. The least value of the refractive index of the prism must be

|
(a) |
(b) |
(c) 1.5 |
(d) 2.0 |
Three bulbs of 40W, 60W and 100W are arranged in series with 220V. Which bulb has minimum resistance
|
(a) 40W |
(b) 60W |
(c) 100W |
(d) Equal in all bulbs |
A current i ampere flows in a circular arc of wire whose radius is R, which subtend an angle 3π/2 radian at its centre. The magnetic induction B at the centre is
|
(a) |
(b) |
(c) |
(d) |
For the magnetic field to be maximum due to a small element of current carrying conductor at a point, the angle between the element and the line joining the element to the given point must be
|
(a) 0° |
(b) 90° |
(c) 180° |
(d) 45° |