Question

2. An object of height 3 cm is placed at a distance of 24 cmn from a convex lens of focal length
10 cm, when an image is formed on the screen on the other side of the lens. Calculate (a) the
distance of the screen from the lens (b) the size of image (c) the characteristics of image.
av = 1744 m.​

Answer 1

Answer:

CONVEX LENS

v+u=45

v=45-u

hi/ho=2

v/u=2

45-u/u=2

45-u=2u

3u=45

u=15

since u is always negative

u=-15

v=45-(-15)

=60cm

1/f=1/v-1/u

1/f=1/60-1/-15

1/f=1/60+1/15

1/f=1+4/60

1/f=5/60

f=60/5=12cm

therefore the object is 15cm from the optic Centre of the lens

and focal length of the lens is 12cm

Explanation:

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Answer 2

Answer:

I am not that sure about my answer..

Just wanted to help you

Explanation: