Question

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Answer 1

Answer:

v = 30 cm

M = - 2

Explanation :

Concave mirrors are used as shaving mirrors.

So, 1/f = 1/v + 1/u

1/(-30) = 1/v - 1/15

1/v = -1/30 + 1/15 = (2 - 1)/ 30

1/ v = 1/30

v = 30 cm

Since, image distance is positive, so it formed behind the mirror and is virtual & erect.

Magnification = - v/ u

M = - 30/ 15

M = - 2

Answer 2

Answer:

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