Question

the focal length of a concave mirror is 10cm. draw the ray diagrams for the situation where the image is real,inverted and same size​

Answer 1

Answer:

place object on the centre of curvature and draw the diagram

Answer 2

Answer:

Given:

Focal length of concave mirror, f = -20 cm

Distance of object from the mirror, u = -10 cm

use formula, 1/v + 1/u = 1/f

or, 1/v = 1/f - 1/u

or, 1/v = 1/-20 - 1/-10

or, 1/v = -1/20 + 1/10 = 1/20

or, v = +20cm

hence, image position is the 20cm right side from the pole of the concave mirror as shown in the diagram. The image is straight and bigger than the object.

Explanation:

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