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please let me know if you need anything let me know and
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Answer:
v = 30 cm
M = - 2
Explanation :
Concave mirrors are used as shaving mirrors.
So, 1/f = 1/v + 1/u
1/(-30) = 1/v - 1/15
1/v = -1/30 + 1/15 = (2 - 1)/ 30
1/ v = 1/30
v = 30 cm
Since, image distance is positive, so it formed behind the mirror and is virtual & erect.
Magnification = - v/ u
M = - 30/ 15
M = - 2
Answer:
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