EASY
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Shown below is a periscope.
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Which of these is the orientation of the image as visible through its eyepiece below?

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Important Questions on Light, Shadows and Reflections

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What is reflection of light? Write law of reflection and draw labelled diagram.

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Write any three uses of plane mirror.

MEDIUM
A ray of light travels from a light source S to an observer after reflection from a plane mirror. lf source rotates in a clockwise direction by 10°, by what angle and in what direction mirror must be rotated so that light still strikes the observer? 
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Which type of reflection of light, regular reflection or diffuse reflection, leads to the formation of images?
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The rear-view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m s-1. The driver sees in his rearview mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be
EASY

Choose the appropriate word and fill in the blank.

Smooth things reflect light _____ (better/lesser) than rough things do.

MEDIUM

What type of reflection of light takes place from a cinema screen?

EASY
How many reflected rays can there be for a given single incident ray falling on a plane mirror?
MEDIUM

Observe the given diagram and answer the following:

Complete the figure to show the path of the ray after it hits the surface of mirror AB.

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EASY
The process of sending back the light rays which fall on the surface of an object is called refraction of light.
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What is reflection of light?          
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A shining metal spoon is a plane mirror.
MEDIUM
What will be the nature of the image formed in a periscope? Explain.
MEDIUM
The image formed in a periscope is upright. Why?
MEDIUM
If a black-coloured object does not reflect any light then how do we see the black printing on the pages of a book?