Question

A candle in 10cm length where is placed vertically at a distance of 20 cm from a concave mirror of focal length 15 CM at what distance from the mirror will the screen be positioned in order to obtain a sharp image find size of the image​

Answer 1

Answer:

Given u = -10cm , v= ? , f = -15cm

Applying mirror's formula,1/v +1/u = 1/f

1/v + 1/-10 = 1/-15

1/v = -1/15 + 1/10

=(-2+3)/30

= 1/30

V = 30 cm.

Hence, we get enlarged image, virtual in nature having magnification 3.

Explanation:

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