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प्रश्न
A driver uses a convex mirror as a rearview mirror. Explain the reason with the help of a ray diagram.
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उत्तर
A convex mirror always forms a small and upright image between pole and focus. That means in a small area of mirror driver can see all the traffic coming from behind.
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संबंधित प्रश्न
Find the focal length of a convex mirror whose radius of curvature is 32 cm.
If you want to see an enlarged image of your face, state whether you will use a concave mirror or a convex mirror?
Why can you not use a concave mirror as a rear-view mirror in vehicles?
If a driver has one convex and one plane rear-view mirror, how would the images in each mirror appear different?
Name two factors on which the focal length of a lens depends.
Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
between F1 and the optical centre O of the lens.
Which of the above two cases shows the use of convex lens as a magnifying glass? Give reasons for your choice.
Explain why a real image can be projected on a screen but a virtual image cannot.
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
The image formed by these mirrors is ______ than the object.
If the object is at infinity in front of a convex mirror the image is formed at infinity.
