Question

A concave mirror produces three times magnified real image of an object placed at 20 cm in front of the mirror how far is the screen from the object

Answer 1

Answer:

It reflects same because it's concave

Answer 2

Answer:

-40cm far

Explanation:

$given$

U=-20 cm

M=-3

solution:-

$m=-v/u\\-3=-v/-20\\v=-60$

distance between object and screen

=v-u

=-60-(-20)

=-40cm

therefore screen from the object is -40cm far

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