The video tutorial covers the basics of waves, focusing on light reflection and refraction. It explains how waves transfer energy, differentiates between mechanical and electromagnetic waves, and describes the electromagnetic spectrum. The tutorial delves into the law of reflection, types of mirrors, and the concept of refraction, providing practical examples and applications.

What type of wave is light?

• Mechanical wave

• Transverse wave

• Longitudinal wave

• Surface wave

Which part of the electromagnetic spectrum has the longest wavelength?

• X-rays

• Gamma rays

• Ultraviolet rays

• Radio waves

Which type of wave is used in cell phones?

• Radio waves

• Microwaves

• Infrared waves

• Ultraviolet waves

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What is the law of reflection?

• The angle of incidence is unrelated to the angle of reflection

• The angle of incidence is less than the angle of reflection

• The angle of incidence is greater than the angle of reflection

• The angle of incidence is equal to the angle of reflection

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What happens to light when it hits a smooth surface?

• It scatters in all directions

• It is absorbed

• It reflects in a regular pattern

• It refracts

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Which type of mirror makes you look taller and thinner?

• Flat mirror

• Concave mirror

• Convex mirror

• Parabolic mirror

What is a virtual image?

• An image that is always inverted

• An image that appears to be on the other side of the mirror

• An image formed by actual light rays

• An image that can be projected on a screen

What is refraction?

• The absorption of light

• The spreading out of light

• The bouncing back of light

• The bending of light when it passes between different materials

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Why does light bend when it passes from air to water?

• Because it reflects

• Because it slows down

• Because it scatters

• Because it speeds up

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What happens to the wavelength of light as it moves from a less dense to a more dense material?

• It decreases

• It remains the same

• It becomes zero

• It increases

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