Question

Hello mates ✌✌ ,

Please help me...

Answer 1

Given that f = -15 cm; u = -25 cm ; ${ H }{ 0 }$ = 4 cm; v = ?

The mirror formula is 1/f = 1/u + 1/v = 1/-15 = 1/-25 + 1/v

1/v = 1/25 - 1/15

1/v = 3-5/ 75 =-2/ 75

v =-37.5 cm

The screen should be placed 37.5 cm from the pole of mirror and the image is real.

Magnification, m = ${ H }{ i }$ / ho = -v/u = hi / 4 = 37.5 / 25

hi = 37.5 / 25 x 4 = -6 cm

So the image is enlarged and inverted.