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| 1. |
An object is kept at 30 cm distance from the concave mirror of focal length 60cm. find the distance from object of concave mirror |
| Answer» HAT - F = 60 cm U = - 30 cm V = ?BY MIRROR'S FORMULA1 / F = 1 / V + 1 / U1 / 60 = 1 / V - 1 / 30 1 / V = 1 / 60 + 1 / 30 = ( 1 + 2 ) / 60 1 / V = 3 / 60 = 1 / 20 V = 20 cm | |