1.

Explain under what conditions a real image of a virtual object and a virtual image of a virtual object are formed in a convex mirror.

Answer»

SOLUTION :According to the equation of a SPHERICAL mirror,
`(1)/(v) + (1)/(u) = (1)/(f) or, (1)/(v) = (1)/(f) - (1)/(u) or, v= (uf)/(u-f)`
Now is case of a convex mirror, `f gt 0` and for virtual object, `u gt 0`.
Now if `f gt u " then" " " v LT 0` , i.e., if the virtual object is SITUATED between the POLE and the focus, real image will be formed.
And if `f lt u " then" " " v gt 0` i.e., if the virtual object is situated between the focus and infinity, virtual image will be formed.


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