Question 1

This type of EM wave is most penetrating through all forms of matter.

Accepted Answer

Gamma Ray

Answer

Visible Light

Answer

Ultraviolet Ray

Answer

Infrared light

Question 2

Which of the following is NOT true about EM waves?

Accepted Answer

Gamma rays cannot penetrate through any forms of matter.

Answer

Microwaves are used in Radar system.

Answer

Ultraviolet rays helps to identify original from fake banknotes.

Answer

Radio waves are used in television broadcast.

Question 3

What happens to the frequency of electromagnetic wave if its wavelength increases?

Accepted Answer

it decreases

Answer

it doubles

Answer

It increases

Answer

remains the same

Question 4

These waves are created due to vibrations between an electric field and a magnetic field.

Accepted Answer

electromagnetic wave

Answer

electromagnetic spectrum

Answer

radio wave

Answer

microwave

Question 5

Which two colors of light lie at the beginning and end of the visible spectrum?

Accepted Answer

red and violet

Answer

red and yellow

Answer

orange and yellow

Answer

green and blue

Question 6

Which electromagnetic wave can travel the least distance because it has a wavelength range of less than 1x10^-8 meters but has the highest energy?

Accepted Answer

ultraviolet ray

Answer

gamma ray

Answer

x-ray

Answer

microwave

Question 7

He shows the experimental evidence of the relationship between electricity and magnetism..

Accepted Answer

Oersted

Answer

Faraday

Answer

Maxwell

Answer

Hertz

Question 8

Which of the following statements is correct?

Accepted Answer

As the wavelength of a wave decreases, the frequency increases.

Answer

As the frequency of a wave decreases, the energy increases.

Answer

As the wavelength of a wave increases, the energy also increases.

Answer

As the frequency of a wave increases, the wavelength also increases.

Question 9

Which of the following statements is CORRECT?

Accepted Answer

Gamma ray has the highest frequency and the highest energy.

Answer

Radio wave has the lowest frequency but has the highest energy.

Answer

Gamma ray has the highest frequency but has the least energy.

Answer

Radio wave has the highest frequency and the highest energy.

Question 10

Which of the following forms of electromagnetic wave has the WIDEST wavelength range?

Accepted Answer

radio wave

Answer

ultraviolet

Answer

microwave

Answer

x-ray

Question 11

Which pair of EM waves is used in Medical field?

Accepted Answer

X-ray and Gamma ray

Answer

Infrared and Visible light

Answer

Radio waves and Microwaves

Answer

Radio waves and Infrared

Question 12

What is the difference between ionizing and non-ionizing radiation?

Accepted Answer

Ionizing radiation has high energy that can remove an electron from the atom, but non-ionizing does not.

Answer

Non-ionizing radiation is a naturally occurring phenomenon and ionizing radiation is only created artificially.

Answer

Ionizing radiation is a naturally occurring phenomenon and non-ionizing radiation is only created artificially.

Answer

Non-ionizing radiation is high-energy radiation, but ionizing radiation is low-energy radiation. B

Question 13

How can we protect ourselves from harmful electromagnetic radiation?

Accepted Answer

Limit sun exposure

Answer

Put your wireless smartphone near

Answer

Spend time outdoors

Answer

Increase cell phone use

Question 14

Which group of EM waves is considered as ionizing radiation?

Accepted Answer

Gamma Ray, Ultraviolet C and X-ray

Answer

Infrared, Microwave, and Ultraviolet

Answer

Ultraviolet A, X-ray, and Gamma Ray

Answer

Radio wave, Infrared and Visible light

Question 15

ionizing radiation remove from atoms?

Accepted Answer

Electrons

Answer

Nucleus

Answer

Protons

Answer

Neutrons

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