Question

the image of an object placed at 24 cm in front of a lens is obtained on a screen at a distance of 72 cm from its calculate the focal length of the lens what would be the height of the image if the object is 2 centimetre in high also find the power of lens

Answer 1

Answer:

Explanation:

u= -24 cm

f= 8 cm

1/f = 1/v - 1/u

1/v = 1/f + 1/u

1/v = 1/8 + 1/-24 = 1/12

  v = 12

Thus the image formed is 12 cm behind the lens

Therefore image formed will be real and inverted

m = v/u

m = 12/-24

m = 0.5

which implies the image formed is diminished

                                                 Hope it was helpful

Answer 2

Answer:

Explanation:

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