A concave mirror of radius of curvature 20cm has a pin placed at 15cm from its pole. What will be the magnification of the image formed?
-
A.
4.00 -
B.
2.00 -
C.
1.33 -
D.
1.50 -
E.
0.25
Correct Answer: Option B
Explanation
1/U + 1/V = 1/f
f = r/2 = 10cm; 1/15 + 1/v = 1/10
v = 30 = m = v/u = 2