Q2 of 31 Page 185

The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?

When the image formed by a concave mirror is observed to be virtual, erect and larger than the object, the position of image will be between the pole of the mirror and its principal focus

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3

Find the power of a concave lens of focal length 2 m.

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Which one of the following materials cannot be used to make a lens?

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Where should an object be placed in front of a convex lens to get a real image of the size of the object ?

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A spherical mirror and a thin spherical lens each have a focal length of, -15 cm. The mirror and the lens are likely to be: