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A concave mirror produces 3 times …

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A concave mirror produces 3 times magnified real image of an object placed at 10cm front of it . Find the image distance.

Posted by Toshank Srivastava 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Gaurav Seth 5 years, 2 months ago

magnification(m) = -3 (as image is real)
object distance(u) = -10cm
image distance (v)=?

we know that m= -v/u

-3 = -v /-10

-3 = v/10

v =-3 * 10

v = - 30 cm

thus the image is 30 cm away from the concave mirror

1Thank You

A K47 5 years, 2 months ago

By the formula of magnification i.e. m=-v/u we can find image distance. Putting in values 3=-v/-10 as object distance is always negative in concave mirror. We get image distance 30cm. So the image is virtual.

1Thank You

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CBSE > Class 10 > Science