A 2 cm high object is placed at a distance of 20 vm from a concave mirror. A real image is formed at 40 cm from the mirror. Calculate the focal length of mirror
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Hey friend, here is your answer
u = - 20 cm
v = - 40 cm
F = ?
=> 1/v + 1/u = 1/F
=> 1/ -40 + 1/ -20 = 1/F
=> -3/40 = 1/F
=> -3F = 40
=> F = 40/-3
=> F = - 13.33 cm
Therefore the focal length of object will be - 13.33 cm
✌️ I HOPE IT HELPS. PLEASE MARK AS BRAILIEST✌️
u = - 20 cm
v = - 40 cm
F = ?
=> 1/v + 1/u = 1/F
=> 1/ -40 + 1/ -20 = 1/F
=> -3/40 = 1/F
=> -3F = 40
=> F = 40/-3
=> F = - 13.33 cm
Therefore the focal length of object will be - 13.33 cm
✌️ I HOPE IT HELPS. PLEASE MARK AS BRAILIEST✌️
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