Live Education Quiz

1

Scattering of light explains why the sky appears

A

Red

B

Blue

C

Green

D

Yellow

2

Radioactivity is the process in which a nucleus:

A

Gains electrons

B

Loses electrons

C

Emits radiations

D

Absorbs energy

3

Visible light lies between which two regions of the electromagnetic spectrum?

A

Infrared and ultraviolet

B

Microwaves and infrared

C

X-rays and gamma rays

D

Radio waves and microwaves

4

In an ideal transformer, power input is:

A

Less than output

B

Greater than output

C

Equal to output

D

Zero

5

Which scattering is responsible for the blue color of the sky?

A

Mie scattering

B

Rayleigh scattering

C

Compton scattering

D

Photoelectric scattering

6

The speed of electromagnetic waves in vacuum is

A

3 × 10^6 m/s

B

3 × 10^7 m/s

C

3 × 10^8 m/s

D

3 × 10^9 m/s

7

Who discovered the atomic nucleus through the gold foil experiment?

A

J.J. Thomson

B

Ernest Rutherford

C

Niels Bohr

D

James Chadwick

8

The SI unit of radioactivity is:

A

Gray

B

Sievert

C

Becquerel

D

Curie

9

Nuclear fission is the process of:

A

Joining two nuclei

B

Splitting a heavy nucleus

C

Electron emission

D

Ion formation

10

Which law gives magnitude of induced emf?

A

Ohm’s law

B

Faraday’s law

C

Lenz’s law

D

Kirchhoff’s law

🎉 Practice Complete!