Question

Q.1 An object of height 5 cm is placed at a distance of 12 cm from a concave lens of focal length
15 cm. Find the position, size and nature of the image.
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Answer 1

Answer:

Click here to get an answer to your question ✍️ An object of height 5 cm is placed at ... on the principal axis infront of a concave mirror of focal length 20 cm. Find the image distance and size of the image.

Answer 2

___✅ᴀɴsᴡᴇʀ ✅___

We know that,

v

1

+

u

1

=

f

1

u = -10 cm

Focal length = 15 cm

∴

v

1

=

15

1

−

(−10)

1

⇒

v

1

=

30

5

=

6

1

⇒v=6cm

∴ The image is formed at a distance 6 cm behind the mirror.

As, v is positive and v<u;

∴m<1

Therefor

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