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प्रश्न
A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the following figure. The pencil of light coming out of the hole falls on a mirror.
At which point should the eye be placed, so that the hole can be seen?
विकल्प
A
B
C
D
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उत्तर
A
Explanation:
Eye should be placed at A because the hole can be seen only, when the angle of incidence is equal to the angle of reflection.
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संबंधित प्रश्न
Fill in the blank
The incident ray, the reflected ray and the normal lie in one _______
Select the correct alternative
The angle of incidence on a plane mirror is 30°.The angle of reflection will be:
Explain the following terms:
Incident ray, Reflected ray, Angle of incidence, Angle of reflection, Normal.
In the following diagrams, measure and write the angle of incidence and draw the reflected ray in a given case.
In the following diagrams, measure and write the angle of incidence and draw the reflected ray in each case.
Light is falling on surfaces S1 S2 and S3 as shown in the following figure.
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Surfaces on which the angle of incidence is equal to the angle of reflection is/are
The angle between incident ray and reflected ray is 60°. What is the value of angle of incidence?
Draw figure showing the position of the plane mirror. Also, label the angle of incidence and angle of reflection on it.
Angle of incidence is greater than the angle of reflection.
Assertion (A): A ray incident along normal to the mirror retraces its path.
Reason (R): In reflection, the angle of incidence is always equal to the angle of reflection.
