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ANSWER
GIVEN :
TO FIND :
IMAGE DISTANCE (V) = ?
SIZE = ?
NATURE = ?
SOLUTION :
USING MIRROR FORMULA = 1/v + 1/u =1/f
1/f- 1/u = 1/v
=> 1/-10 - 1/-15 = 1/v
=>1/10 + 1/-15 =1/v
=> 2 -3 /30 =1/v
=> -1/30 = 1/v
Hence v = -30cm.
THE IMAGE IS FORMED IN FRONT OF THE MIRROR.
size of the image = magnification
hi/h = -v/u
=> hi = -v/u × h
=> hi = -30/-15 ×4
=> hi = 8 cm
The image is magnified twice
Nature : image is real, inverted and is formed in front of the mirror.
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