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1.
2.
A ray of light is travelling from a rarer medium to a denser medium. While entering the denser medium at the point of incidence, it
3.
If the image is formed in front of the mirror, then the image distance will be
4.
Which mirroji can produce a virtual, erect and magnified ifhage of an object?
5.
When the object is placed between f and 2f of a convex lens, the image formed is
6.
If the magnification produced by a lens has a negative value, the image will be
7.
A spherical mirror and a spherical lens each have a focal length of -10 cm. The mirror and the lens are likely to be
8.
If the power of a lens is - 2 D, what is its focal length?
9.
Focal length of a concave mirror is
10.
A point object is placed at a distance of 20 cm from a convex mirror of focal length 20 cm. The image will form at: