The focal length of a concave mirror is 15 cm. The magnification of an object placed at a distance of 12 cm from the mirror is ?
Answers
Answered by
2
Answer: +5
Explanation:
object distance (u) = - 12cm
focal length (f) = - 15cm
Using Mirror Formula,
1/u + 1/v = 1/f
-1/12 + 1/v = - 1/15
1/v = -1/15 + 1/12 = -4+5/60 = + 1/60
v = +60cm
Magnification (m) = - v/u
= - 60/ -12 = +5
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Answered by
3
Answer:
The magnification produced by the concave mirror is 5.
Explanation:
We will use the following relation to solve this question,
(1)
Where,
m=magnification of the mirror
f=focal length of the mirror
u=object distance from the mirror
From the question we have,
f=-15cm (The focal length of the concave mirror is negative)
u=-12cm
By substituting the value of f and u in equation (1) we get;
Hence, the magnification produced by the concave mirror is 5.
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