Question

1. An object is placed vertically at a
distance of 20 cm from a convex lens. If
the height of the object is 5 cm and the
focal length of the lens is 10 cm, what will
be the position, size and nature of the
image? How much bigger will the image
be as compared to the object?​

Answer 1

Answer:

This one is easy forsooth!

Here we have,

U(object distance) = -20cm

F(focal length) =+25cm

Now we will apply the mirror formula ie

[math]1/f=1/v+1/u[/math]

1/25=-1/20+1/v

1/25+1/20=1/v

Lcm(25,20) is 100

4+5/100=1/v

9/100=1/v

V=100/9

V=11.111cm

Position of the image is behind the mirror(11.111cm) and the image is diminished in nature.

Explanation:

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Answer 2

Answer:

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