Electromagnetic Waves Test

Result

Electromagnetic Waves Test - 15

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following statements is not true in case of electromagnetic waves?

A
they are light waves

B
they are transverse waves

C
propagates through space

D
they are longitudinal waves
Question 2
4 / -1

The oscillating electric and magnetic field vectors of an electromagnetic waves far away from source are oriented along

A
Mutually perpendicular direction and differ in phase by 90^o

B
Mutually perpendicalar and in same phase

C
In same direcfi on and in same phase

D
In same divecfi on and differ in phase by 90^o
Question 3
4 / -1

Which of the following option of electromagnetic waves is in order of increasing frequency ?

A
microwaves, ultraviolet rays, x rays

B
gamma rays, ultraviolet rays, radiowaves

C
radiowaves, visible light, infrared rays

D
gamma rays, visible light, ultraviolet rays
Question 4
4 / -1

The sum delivers10³ Wm^–2 of electromagnetic flux to earth’s surface. The total power that is incident on a roof of dimension 8m x 20m will be

A

B

C

D
Question 5
4 / -1

Bolometer is used to detect ______________

A
infrared rays

B
ultraviolet rays

C
x rays

D
γ rays
Question 6
4 / -1

Range of frequency of microwaves is about __________

A
530kHz to 1710kHz

B
54MHz to 890MHz

C
3GHz to 300GHz

D
Question 7
4 / -1

SI unit of displacement current is

A
Coulomb

B
Ampere

C
Faraday

D
Candela
Question 8
4 / -1

The frequencies of x rays, γ rays and ultraviolet rays are respectively p, q and r then

A
p < q, q > r

B
p > q, q > r

C
p > q, q < r

D
p < q, q < r
Question 9
4 / -1

At room temperature, if the relative permitivity of water is 80 and the realtive permiability be 0.0222 then the velocity of light in water is __________ m/s

A

B

C

D
Question 10
4 / -1

A

B

C

D