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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 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?
पर्याय
A
B
C
D
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
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.
The following diagram shows an incident ray AO and the normal ON on a plane mirror. Find the angle of incidence and angle of reflection.
Draw a ray diagram showing the formation of image of a point object by a plane mirror.
Define the following term
Angle of incidence
Draw figure showing the position of the plane mirror. Also, label the angle of incidence and angle of reflection on it.
There is a mistake in, each of the following ray diagrams given as fig. (a), (b), and (c). Make the necessary correction(s).
 |
 |
 |
| (a) | (b) | (c) |
The angle formed between the reflected ray and the normal is ______.
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.
