1 / 10

The magnetic moment of a current I carrying circular coil of radius r and number of turns N varies as

2 / 10

A spectral line is emitted when an electron

3 / 10

In an n-p-n transistor circuit the collector current is 18 mA. If 90% of the electrons emitted reach the collector, than the emitter current is:

4 / 10

Beta rays emitted by a radioactive material are

5 / 10

When light is directed at the metal surface, the emitted electrons:

6 / 10

The best metal to be used for photoemission is

7 / 10

1 volt is equivalent to

8 / 10

The force per unit charge is known as

9 / 10

A test charge is moved from lower potential point to a higher potential point. The potential energy of test charge will

10 / 10

When an electron jumps from some outer orb it to the innermost orbit in the hydrogen atom, the spectral line belongs to


Thank you !

for subscribing to our monthly newsletter Ed-Lines Today.

Thank You For Registration !

Please Check your email/Spam Folder