
- AThe magnet is pushed into the coil
- BThe magnet is rotated into the coil
- CThe magnet is stationary at the centre of the coil.
- DThe number of turns in the coil is reduced.

Explanation:
The deflection in the galvanometer (G) occurs, when the magnet is pushed into the coil. This is because the relative motion between the two induces an emf into the coil.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The internal resistance of a cell is the resistance of
|
(a) Electrodes of the cell |
(b) Vessel of the cell |
|
(c) Electrolyte used in the cell |
(d) Material used in the cell |
The diffraction effect can be observed in
|
(a) Only sound waves |
(b) Only light waves |
|
(c) Only ultrasonic waves |
(d) Sound as well as light waves |
In vacuum the speed of light depends upon
|
(a) Frequency |
(b) Wave length |
|
(c) Velocity of the source of light |
(d) None of these |
The attenuation in optical fibre is mainly due to
|
(a) Absorption |
(b) Scattering |
|
(c) Neither absorption nor scattering |
(d) Both (a) and (b) |