- AAre from N-pole to S-pole of magnet.
- BDo not exist.
- CDepend upon the area of cross section of bar magnet.
- DAre from S-pole of magnet.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The pointer of a dead-beat galvanometer gives a steady deflection because
|
(a) Eddy currents are produced in the conducting frame over which the coil is wound |
|
(b) Its magnet is very strong |
|
(c) Its pointer is very light |
|
(d) Its frame is made of abonite |
When a plane mirror is rotated through an angle θ then the reflected ray turns through the angle 2θ then the size of the image
| (a) Is doubled | (b) Is halved | (c) Remains the same | (d) Becomes infinite |
A 100 ohm galvanometer gives full scale deflection at 10 mA. How much shunt is required to read 100 mA
|
(a) 11.11 ohm |
(b) 9.9 ohm |
(c) 1.1 ohm |
(d) 4.4 ohm |
In which one of the following regions of the electromagnetic spectrum will the vibrational motion of molecules give rise to absorption
|
(a) Ultraviolet |
(b) Microwaves |
(c) Infrared |
(d) Radio waves |