Science-Q2-S1-G10

Which of the following properties of a wave defines the gap between two crests?

• frequency

• lumen

• photon

• wavelength

In electromagnetic wave spectrum, which electromagnetic wave has the highest

frequency?

• Gamma Ray

• Microwave

• Ultraviolet Ray

• X-ray

Which of the following describes the number of wave cycles per unit time?

• frequency

• lumen

• photon

• wavelength

What is the speed of an electromagnetic wave in vacuum space?

• 3.0 x 10 8 cm/s

• 3.0 x 10 8 m/s

• 3.0 x 10 8 Km/s

• 3.0 x 10 8 mi/s

Which of the electromagnetic waves has the greatest amount of energy?

• Gamma ray

• Radio wave

• Ultraviolet ray

• X-ray

How does the wavelength of a wave relate to its frequency?

• If frequency decreases, the wavelength doubles.

• If frequency increases, the wavelength decreases.

• If frequency increases, the wavelength increases.

• If frequency decreases, the wavelength remains the same.

The speed of light varies with the type of material it propagates. Which of following

describes this phenomenon?

• The density of the material is directly proportional to speed of light.

• The density of the material is inversely proportional to speed of light.

• The opacity of a material is directly proportional to the speed of light.

• The opacity of a material is inversely proportional to the speed of light.

Which of the following best describes the propagation of a radio wave?

• Radio wave travels slower since it has lesser energy.

• Radio wave travels faster since it has longer wavelength.

• Radio wave travels further since it has greater frequency.

• Radio wave travels further since it has longer wavelength.

What will happen to an electromagnetic wave if the energy is decreased?

• Frequency will increase.

• Frequency will decrease

• Wavelength will decrease.

• Wavelength remains the same.

Given the wavelength of a microwave which is 1 x 10-3 m, what would be the

frequency if the wave travels in vacuum?

• 2.5 x 1010 Hz

• 3.0 x 1010 Hz

• 2.5 x 1011 Hz

• 3.0 x 1011 Hz