Electromagnetic Waves MCQ Questions Class 12 Physics Chapter 8
NCERT MCQ Questions for Class 12 Physics Chapter 8 Electromagnetic Waves. Electromagnetic Waves MCQ Questions with Answers from Class 12 Physics.
Electromagnetic Waves MCQ Questions Class 12 Physics Chapter 8
Electromagnetic Waves Multiple Choice Questions with Answers Class 12 Physics Chapter 8 PDF is available.
1) The current carried by conductors due to flow of charges is called as
a) Conventional current
b) AC current
c) DC current
d) Conduction current
Ans: d) conduction current
2) The current due to change in electric field nor electric displacement is called as
a) Eddy current
b) Displacement current
c) Maxwell’s displacement current
d) Both b and c
Ans: d) both b and c
3) The total current passing through the any surface of which the closed loop is the perimeter is the sum of conduction current and the displacement current , this is
a) Ampere’s circuital law
b) Generalised Ampere’s circuital law
c) Ampere’s law
d) None
Ans: b) generalised Ampere’s circuital law
4) The generalised Ampere’s circuital law is called as
a) Maxwell’s law
b) Ampere Maxwell’s law
c) Ampere’s circuital law
d) None
Ans: b) Ampere Maxwell’s law
a) Gauss’s law for magnetism
b) Faraday’s law
c) Ampere Maxwell’s law
d) Gauss’s law for electricity
Ans: d) Gauss’s law for electricity
a) Gauss’s law for magnetism
b) Gauss’s law for electricity
c) Ampere Maxwell’s law
d) Faraday’s law
Ans: a) Gauss’s law for magnetism
a) Gauss’s law for magnetism
b) Gauss’s law for electricity
c) Faraday’s law
d) Ampere Maxwell’s law
Ans: c) Faraday’s law
a) Faraday’s law
b) Ampere Maxwell’s law
c) Gauss’s law for magnetism
d) Gauss’s law for electricity
Ans: b) Ampere Maxwell’s law
9) In an electromagnetic waves, the electric and magnetic fields are
a) perpendicular to each other
b) parallel to each other
c) both a and b
d) none
Ans: a) perpendicular to each other
10) The electromagnetic waves can travels with the speed of
a) 3*10-8m/s
b) 3*10-9m/s
c) 3*108 km/s
d) 3*108 m/s
Ans: d) 3*108 m/s
11) The pressure exerted by electromagnetic waves is called as
a) electromagnetic pressure
b) radiation pressure
c) thermal pressure
d) magnetic pressure
Ans: b) radiation pressure
12) The waves which are produced by the accelerated motion of charges in conducting wires are called as
a) microwaves
b) infrared waves
c) radio waves
d) ultraviolet rays
Ans: c) radio waves
- In case you have missed:- Previous Chapter MCQ Questions
13) The frequency range for the radio waves is about
a) 500Hz to 1000MHz
b) 500KHz to 1000MHz
c) 50KHz to 1000 MHz
d) none
Ans: b) 500KHz to 1000 MHz
14) The TV waves range is about
a) 54Hz to 890MHz
b) 54KHz to 890MHz
c) 54MHz to 890 MHz
d) none
Ans: c) 54MHz to 890 MHz
15) The short wavelength radio waves with frequency in the gigahertz are called as
a) radio waves
b) infrared waves
c) microwave
d) gamma rays
Ans: c) microwave
16) The waves produced by hot bodies and molecules are called as
a) radio waves
b) microwave
c) infra red waves
d) none
Ans: c) infra red waves
17) Infra red waves are sometimes referred as
a) thermal waves
b) radiation waves
c) heat waves
d) pressure waves
Ans: c) heat waves
18) The frequency range for visible rays is about
a) 4*1014 KHz to 7*1014 KHz
b) 4*1014 Hz to 7*1014 Hz
c) 4*10-14 Hz to 7*10-14 Hz
d) none
Ans: b) 4*1014 Hz to 7*1014 Hz
19) The wavelength range for visible rays is about
a) 700-300nm
b) 700-400nm
c) 700-400mm
d) 700-400m
Ans: b) 700-400nm
20) The rays which are produced by special lamps and very hot bodies are called as
a) infrared rays
b) gamma rays
c) visible rays
d) ultraviolet rays
Ans: d) ultraviolet rays
21) The wavelength range for ultraviolet rays is about
a) 400nm – 0.6nm
b) 4*10-7m to 6*10-10m
c) 700-400nm
d) both a and b
Ans: d) both a and b
22) The wavelength range for X rays is about
a) 10-8m to 10-13m
b) 10nm to 10-4 nm
c) both a and b
d) none
Ans: c) both a and b
23) The wavelength range for gamma rays is about
a) 10-10m to less than 10-14m
b) 10-10m
c) 10-14m
d) none
Ans: a) 10-10m to less than 10-14m
24) ______ radiates electromagnetic waves.
a) accelerated uncharged particles
b) accelerated charged particles
c) charged particles
d) both b and c
Ans: b) accelerated charged particles
- In case you have missed:- Next Chapter MCQ Questions