- ACell
- BBattery
- CGenerator
- DAll of these
Explanation:
A source of EMF can be cell, battery or generator.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

If
is 6563 Å, then wave length of second line for Balmer series will be
|
(a) |
(b) |
(c) |
(d) None of the above |
Assertion : Television signals are received through sky-wave propagation.
Reason : The ionosphere reflects electromagnetic waves of frequencies greater than a certain critical frequency.
|
(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. |

The work functions for sodium and copper are 2eV and 4eV. Which of them is suitable for a photocell with 4000 Å light
|
(a) Copper |
(b) Sodium |
(c) Both |
(d) Neither of them |
Which one of the following is known as Saptarishi
|
(a) Orion |
(b) Ursa major |
(c) Ursa minor |
(d) Scorpion |