Question

an object 20 cm high is placed at a distance 50 cm from a convex lens by drawing a accurate scale diagram, find the position, nature and size of the image​

Answer 1

Explanation:

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12th

Physics

Ray Optics and Optical Instruments

Combination of Mirror and Lenses

An object is placed at a di...

PHYSICS

An object is placed at a distance of 50 cm from a concave lens of focal length 20 cm. Find the nature and position of the image.

EASY

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ANSWER

Focal length of concave mirror is negative.

f=−20cm

u=−50cm

We know that :

f

1

=

v

1

−

u

1

−20

1

=

v

1

−

−50

1

v=−14.3cm.

The image is virtual, erect.

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