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The focal length of concave mirror is 20 cm. An object is placed at 30 cm from the pole of mirror then imageformed from the pole is(options)1) 15 cm2) 20 cm3) 60 cm4) 30 cm​

Answer»

60 CM (3)Explanation:f = -20cmu = -30cmv = ?mirror formula = 1/u+1/v = 1/f                            1/v = 1/f-1/u1/v = -1/20 - (-1/30)         -1/20+1/30         -3+2/60         -1/60v = -60 cmso, the image will be formed at 60 cm from the POLE....HOPE it helps...please MARK as brainliest ANSWER if you are satisfied...thank you...



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