Question

an object is placed at the centre of curvature of a concave mirror of radius of curvature 20cm and focal length 10 cm at what distance from the ball will its image be formed​

Answer 1

Answer:

Explanation:Given Data:

R = 20cm, f = R/2 =10cm

P = ? (Distance of the object)

q =2p (from definition of magnification)

Formula for concave mirror is

1/f = 1/p + 1/q

1/f = 1/p + 1/2p

1/f = 3/2p

P = 3f/2 =(3×10cm)/2

P = 15cm

Answer 2

Answer:

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