Question

plz help it's urgent don't spam plz wrong answer will be reported ​

Answer 1

Answer:

ur answer is 4.8 m

Explanation:

We know, The mirror equation,

1/v + 1/u = 1 / f   ........................(1)

Here the mirror taken is a concave mirror.

Here:  

v = mirror to image distance = 8 m

u = mirror to object distance = unknown

f = focal length = 3 m

Plug the values in the equation:

1/8 + 1/u = 1/3 ...........................(2)

= u+8/ 8u = 1/3

= 3u + 24 = 8u  

=  5u = 24

Hence, u = 4.8 m

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