MCQs on Electromagnetic Spectrum

MCQs on Electromagnetic Spectrum

Q1: Which of the following has a minimum wavelength?

1. Gamma rays
2. Blue light
3. Infrared rays
4. microwave

Answer: (a) Gamma rays

Q2: Which among the following has the maximum penetrating power?

1. Radio waves
2. Microwaves
3. Ultraviolet radiation
4. Gamma rays

Answer: (d) Gamma rays

Q3: Which of the following is called heat radiation?

1. X-rays
2. Gamma rays
3. Microwave
4. Infrared radiation

Answer: (d) Infrared radiation

Q4: Which of the following are not electromagnetic waves?

1. Cosmic rays
2. Gamma rays
3. β rays
4. X rays

Answer: (c) β rays

Q5: 10 cm is the wavelength corresponding to the spectrum of

1. Infrared rays
2. Ultraviolet rays
3. Microwaves
4. X-rays

Answer: (c) Microwaves

Q6: The structure of solids is investigated by using

1. Microwaves
2. Gamma rays
3. X-rays
4. Infrared rays

Answer: (c) X-rays

Q7: Which radiations are used in the treatment of muscle ache?

1. Infrared
2. Ultraviolet
3. Microwave
4. X-rays

Answer: (a) Infrared

Q8: The ultra-high frequency band of radio waves in the electromagnetic wave is used as in

1. Television
2. Cellular phone communication
3. Commercial FM radio
4. Both a and b

Answer: (b) Cellular phone communication

Q9: The waves used by artificial satellites for communication is

1. Microwaves
2. Infrared waves
3. Radio waves
4. X rays

Answer: (a) Microwaves

Q10: Which of the following electromagnetic waves is used in medicine to destroy cancer cells?

1. IR-rays
2. Visible rays
3. Gamma rays
4. Ultraviolet rays

Answer: (c) Gamma rays