Question

Answer the following questions :-

1] What is light?
2] What is angle of incidence?
3] What is angle of reflection?
4] What is the speed of light in vaccum?
5] What is the Normal?

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Answer 1

Answer:

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1] What is light?

➾ Light is a form of energy, which helps us to see things around us.

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2] What is angle of incidence?

➾ The angle between the normal and the incident ray is the angle of incidence.

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3] What is angle of reflection?

➾ The angle between the normal and the reflected ray is the angle of reflection.

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4] What is the speed of light in vaccuum?

➾ 3 × 10⁸ m/sec.

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5] What is the normal?

➾ Normal is the line perpendicular to the plane mirror at the point of incidence.

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⠀⠀⠀ ⠀⠀ ωıтн яєgαя∂s

⠀⠀⠀ ⠀⠀⠀❤αя + ηαѵ❤

Answer 2

Answer:

1) light is the form of energy. Light is needed to see things around is. Light enables to see objects from which it comes or from which it is reflected. We detect light with our eyes.

2) The angle between the normal and the ray of light is called angle of incidence. See in the diagram.

3) The angle between reflected ray and the normal is called angle of reflection. see in diagram.

4) 299,792,458 m / s.

5) Normal is the regular , natural, common type. For example - Example of normal is a human temperature of 98 . 6 .