An object is placed 20m in front of a concave mirror of focal length 15cm.object is 3cm high calculate the position and size of the image.
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1/v + 1/u = 1/f
1/v = -1/15-(-1/20)
= -1/15 + 1/20
= -4+3/60
= -1/60
v= -60 cm
image will be formed 60cm from lens.
v/u = hi/ho
60/20=hi/3
ho= 9cm
size of image is 9cm
1/v = -1/15-(-1/20)
= -1/15 + 1/20
= -4+3/60
= -1/60
v= -60 cm
image will be formed 60cm from lens.
v/u = hi/ho
60/20=hi/3
ho= 9cm
size of image is 9cm
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