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प्रश्न
The distance between the object and its image formed by a plane mirror appears to be 24 cm. What is the distance between the mirror and the object?
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उत्तर
The distance between object and image includes the distance between image and mirror and the distance between object and mirror. In the case of a plane mirror, the distance between the plane mirror and object is equal to the distance between the plane mirror and image. Let the distance from the image to the mirror be x.
Then, the distance from the object to mirror is also x.
So, x + x = 24 cm
x = 12 cm
Hence, distance between the mirror and the object is 12 cm.
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संबंधित प्रश्न
Write true or false of the following statement.
The objects are seen around us due to irregular reflection of light.
Fill in the blank
Angle of incidence = ___________
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.
Draw a ray diagram showing the formation of image of a point object by a plane mirror.
Define the following term
Normal
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?
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 figures a, b, and c. Make the necessary correction (s).
 |
 |
 |
| (a) | (b) | (c) |
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.
