Question

An object is placed 90 cm from a concave mirror of focal length 30 cm. Find the position and nature of the image formed

Answer 1

Answer:

Explanation:

=> Here, it is give,

Distance of object, u= - 90

Focal length, f= - 30  

=> From the mirror formula, we get

$\frac{1}{f} = \frac{1}{v} + \frac{1}{u}$  

$\frac{1}{-30} = \frac{1}{v} - \frac{1}{90}$

$\frac{1}{v} = \frac{1}{-30} + \frac{1}{90}$

$\frac{1}{v}  = \frac{-3+1}{90}$

$\frac{1}{v}  = \frac{-2}{90}$

$\frac{1}{v}  = \frac{-1}{45}$

v = - 45

=> Nature : Real image

Answer 2

Answer:

Hope it helps you...

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