Question

An object of size 7 cm is placed at 27cm in front of a concave mirror of focal length 18 cm .at what distance from the mirror should a screen be placed so that a sharp focus image can be produced. find size and nature of image.​

Answer 1

Answer:

Refer attachment!!!

Explanation:

Answer 2

Answer:

1/f = 1/v + 1/u

1/(-18) = 1/v + 1/(-27)

1/(-18) + 1/27 = 1/v

1/27 - 1/18 = 1/v

2 - 3/54 = 1/v

-1/54 = 1/v

v = -54

size of the image : -14 ( double of the object size )

nature : Real image, enlarge and inverted.