If the focal lenght of a concave mirror is 15 cm then where should our object be placed so that the image is formed at -17 cm.
Answer (1)
5th Jun, 2022
Dear aspirant,
The question asked by you is just a formula based question . The formula is 1/v - 1/u = 1/f.
With the help of this formula you will be able take out what's asked in the question.
Given data :- Focal length = 15 cm, Image position = -17 cm.
So, just put in the formula with the sign.
1/-17 -1/u = 1/15
->1/u=- 1/15 -1/17
1/u = -32/255
u =- 255/32
That's your answer.
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