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प्रश्न
A ray of light passing through centre of curvature of a spherical mirror, after reflection
विकल्प
passes through the focus
passes through the pole
becomes parallel to the principal axis
retraces its own path.
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उत्तर
retraces its own path.
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संबंधित प्रश्न
An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image.
Give two uses of a convex mirror. Explain why you would choose convex mirror for these uses.
An object is placed at the following distance from a convex lens of focal length 15 cm:
(a) 35 cm
(b) 30 cm
(c) 20 cm
(d) 10 cm
Which position of the object will produce:
(i) a magnified real image?
(ii) a magnified virtual image?
(iii) a diminished real image?
(iv) an image of same size as the object?
The focal length of a convex mirror is equal to its radius of curvature.
To determine the focal length of a convex lens by obtaining a sharp image of a distant object we generally follow the following steps which are not in proper sequence.
(a) Hold the lens between the object and the screen
(B) Measure the distance between the lens and the screen
(C) Select a well lit distant object
(D) Place a screen opposite to the object on the lab table
(e) Adjust the position of the lens to form a sharp image
The correct sequence of these steps is:
(A) c, a, d, e, b
(B) c, d, a, e, b
(C) c, d, e, a, b
(D) c, a, e, d, b
When the reflecting surface is curved outwards the mirror formed will be ______.
As you move an object always from a convex mirror, its image becomes ______
and moves towards ______.
Assertion: A real image cannot be produced by plane or convex mirror.
Reason: The focal length of a convex mirror is always taken as positive.
Why a convex mirror is preferred for rearview mirrors in cars?
