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Electromagnetic Spectrum Questions and Answers. We covered all the Electromagnetic Spectrum Questions and Answers MCQ in this post so that you can practice well for the exam.
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Electromagnetic Spectrum Questions and Answers MCQ for Students
Quick Quiz
Microwaves are commonly applied in
a. Radar
b. Telemetry
c. Microwave cooking
d. All of the above
Option d – All of the above
The type of wave used for transmitting phone calls is
a. Radio waves
b. Microwaves
c. Infrared waves
d. Ultraviolet rays
Option c – Infrared waves
Satellite communication typically uses
a. Microwaves
b. Radio waves
c. Ultraviolet radiation
d. Visible light
Option a – Microwaves
Low-frequency electromagnetic oscillators generate
a. Microwaves
b. Radio waves
c. Ultraviolet rays
d. Gamma rays
Option b – Radio waves
Waves that can travel vast distances and transmit signals are
a. Radio waves
b. Microwaves
c. Ultraviolet rays
d. Visible light
Option a – Radio waves
Electromagnetic waves that originate from outer space are
a. Microwaves
b. Infrared rays
c. Ultraviolet rays
d. Radio waves
Option d – Radio waves
The technique used to record radio signals from space is known as
a. Physiotherapy
b. Radiography
c. Radio astronomy
d. Radiotherapy
Option c – Radio astronomy
Which field helps us explore cosmic information?
a. Radio astronomy
b. Radiography
c. Radiotherapy
d. Physiotherapy
Option a – Radio astronomy
The part of the electromagnetic spectrum that is most familiar is
a. Visible light
b. Infrared
c. Microwaves
d. Ultraviolet
Option a – Visible light
The type of spectrum emitted by all light sources is
a. Infrared
b. Ultraviolet
c. Visible
d. Radio
Option c – Visible
When electrons return to ground state from an excited state, the emitted spectrum is
a. Infrared
b. Ultraviolet
c. Visible
d. Microwaves
Option c – Visible
A unique trait of an atom can be observed through
a. Light’s color emitted by it
b. Energy it emits
c. Intensity of emitted radiation
d. None of the above
Option c – Intensity of emitted radiation
What gives clues about the matter present in stars and the Sun?
a. The heat they emit
b. The color of their light
c. The energy they release
d. None of the above
Option b – The color of their light
Molecular transitions in rotational or vibrational states produce which spectrum?
a. Visible
b. Ultraviolet
c. Infrared
d. X-rays
Option a – Visible
Heat is transferred from objects in the form of
a. Infrared radiation
b. Ultraviolet rays
c. Radio waves
d. Microwaves
Option a – Infrared radiation
Which are sources of infrared radiation?
a. All light sources
b. All heated bodies
c. All cold surfaces
d. None of these
Option b – All heated bodies
Infrared radiation can be detected using
a. Thermometers
b. Thermopiles
c. Bolometers
d. All of these
Option d – All of these
Devices that detect infrared radiation are
a. Heat-sensitive
b. Eye-sensitive
c. Skin-sensitive
d. Ear-sensitive
Option a – Heat-sensitive
Instruments sensitive to heat include
a. Thermometers
b. Thermopiles
c. Bolometers
d. All of these
Option d – All of these
Infrared radiation is used in
a. Physiotherapy
b. Night-time photography
c. Cancer treatment
d. Both a and b
Option d – Both a and b
The spreading of white light into colors using a prism is called
a. Reflection
b. Deflection
c. Light dispersion
d. Scattering
Option c – Light dispersion
A group of wavelengths or frequencies is known as
a. Spectrum
b. Color band
c. Light garland
d. None of these
Option a – Spectrum
Infrared radiation can be classified as
a. Visible light
b. Heat rays
c. Cold rays
d. None of these
Option b – Heat rays
Sources of infrared rays include
a. Electric heaters
b. Soldering irons
c. Clothes irons
d. All of these
Option d – All of these
Glass that absorbs infrared rays is
a. Regular soda glass
b. Rock salt
c. Flint glass
d. Pyrex glass
Option a – Regular soda glass
IR radiation prisms are made of
a. Pyrex glass
b. Ordinary soda glass
c. Flint glass
d. Rock salt
Option b – Ordinary soda glass
A source of infrared rays is
a. Ice
b. Heated iron
c. Cold metal
d. Boiling water
Option b – Heated iron
All electromagnetic radiation types together are called
a. Spectrum
b. Visible spectrum
c. Electromagnetic spectrum
d. None of the above
Option c – Electromagnetic spectrum
Short exposure to UV rays results in
a. Cancer
b. Sunburn
c. Tuberculosis
d. None of these
Option b – Sunburn
Long-term exposure to ultraviolet radiation may cause
a. Skin disorders
b. Cancer
c. Sunburn
d. Both a and b
Option d – Both a and b
UV radiation from the Sun is majorly absorbed by the
a. Ionosphere
b. Hydrosphere
c. Ozone layer
d. None of these
Option c – Ozone layer
Which method provides space information beyond what optical telescopes offer?
a. Radiotherapy
b. Radiography
c. Radio astronomy
d. Physiotherapy
Option c – Radio astronomy
The spectrum produced by atomic electron transitions is
a. Visible
b. Ultraviolet
c. Infrared
d. Radio waves
Option b – Ultraviolet
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