MCQs on Electromagnetic Spectrum
Q: Which of the following has a minimum wavelength?
a) Gamma rays
b) Blue light
c) Infrared rays
d) microwave
Answer: (a) Gamma rays
Q: Which among the following has the maximum penetrating power?
a)Radio waves
b)Microwaves
c)Ultraviolet radiation
d)Gamma rays
Answer: (d) Gamma rays
Q: Which of the following is called heat radiation?
a) X-rays
b) Gamma rays
c) Microwave
d) Infrared radiation
Answer: (d) Infrared radiation
Q4: Which of the following are not electromagnetic waves?
a) Cosmic rays
b) Gamma rays
c) β rays
d) X rays
Answer: (c) β rays
Q: 10 cm is the wavelength corresponding to the spectrum of
a) Infrared rays
b) Ultraviolet rays
c) Microwaves
d) uX-rays
Answer: (c) Microwaves
Q: The structure of solids is investigated by using
a) Microwaves
b) Gamma rays
c) X-rays
d) Infrared rays
Answer: (c) X-rays
Q: Which radiations are used in the treatment of muscle ache?
a) Infrared
b) Ultraviolet
c) Microwave
d) X-rays
Answer: (a) Infrared
Q: The ultra-high frequency band of radio waves in the electromagnetic wave is used as in
a) Television
b) Cellular phone communication
c) Commercial FM radio
d) Both a and b
Answer: (b) Cellular phone communication
Q: The waves used by artificial satellites for communication is
a) Microwaves
b) Infrared waves
c) Radio waves
d) X rays
Answer: (a) Microwaves
Q: Which of the following electromagnetic waves is used in medicine to destroy cancer cells?
a) IR-rays
b) Visible rays
c) Gamma rays
d) Ultraviolet rays
Answer: (c) Gamma rays
