Electromagnetic Waves and their Characteristics NEET Questions

Physics - Electromagnetic Waves

Electromagnetic Waves and their Characteristics MCQ Questions


7.
The wavelength of visible light ranges approximately between:
A.
200-400 nm
B.
400-700 nm
C.
100-400 nm
D.
700-1000 nm
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ANSWER :
B. 400-700 nm
8.
Which of the following waves has the longest wavelength?
A.
Gamma rays
B.
X-rays
C.
Radio waves
D.
Infrared
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ANSWER :
C. Radio waves
9.
Which physical quantity remains unchanged for all electromagnetic waves in a vacuum?

NEET - 2021

A.
Wavelength
B.
Frequency
C.
Speed
D.
Amplitude
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ANSWER :
C. Speed
10.
Infrared radiation is mainly associated with:
A.
Cooling effect
B.
Heat radiation
C.
Chemical reactions
D.
Nuclear reactions
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ANSWER :
B. Heat radiation
11.
X-rays are produced by:
A.
Electron transitions
B.
Fast moving electrons
C.
Radioactive decay
D.
High voltage electron collisions
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ANSWER :
D. High voltage electron collisions
12.
The speed of electromagnetic waves in a vacuum is equal to the speed of

NEET - 2016

A.
Light
B.
Sound
C.
Electrons
D.
Neutrons
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ANSWER :
A. Light