The video tutorial explores the concepts of reflection and refraction of light. It explains how light behaves when it encounters different surfaces, using ray diagrams to illustrate reflection and refraction. The tutorial covers the angles of incidence, reflection, and refraction, and discusses how light changes direction when moving between media of different densities. Special cases, such as when refraction does not occur, are also highlighted. The video concludes with a summary of the key concepts of reflection and refraction.

What is the nature of light as described in the video?

• Longitudinal wave

• Transverse wave

• Circular wave

• Elliptical wave

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What happens to light when it hits a rough surface like wood?

• It gets absorbed completely

• It reflects in a regular way

• It refracts

• It scatters in all directions

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If a ray of light hits a smooth surface at 30 degrees, at what angle will it reflect?

• 15 degrees

• 30 degrees

• 45 degrees

• 60 degrees

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What is the angle between the normal and the incoming incident ray called?

• Angle of reflection

• Angle of deviation

• Angle of refraction

• Angle of incidence

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What is the angle of incidence if the angle of reflection is 34 degrees?

• 56 degrees

• 34 degrees

• 90 degrees

• 45 degrees

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What causes refraction of light?

• Change in light's frequency

• Change in light's color

• Change in light's speed

• Change in light's wavelength

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When light passes from a medium where it travels faster to a medium where it travels slower, how does it bend?

• It bends randomly

• Away from the normal

• Towards the normal

• It doesn't bend

What happens to light waves when they cross the boundary at exactly 90 degrees?

• They bend towards the normal

• They bend away from the normal

• They get absorbed

• They carry straight on

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Why does a straw in a glass of water appear bent at the surface?

• Because of reflection

• Because of refraction

• Because of scattering

• Because of absorption

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What do both reflection and refraction have in common?

• They both have an angle of incidence

• They both involve absorption

• They both change the color of light

• They both involve scattering

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