MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Image Formation by Convex Lens

A parallel be...

Question

A parallel beam of light is incident on a lens of focal length 10 cm. A parallel slab of refractive index 1.5 and thickness 3 cm is placed on the other side of the lens. find the distance of the final image from the lens.

A

11 cm

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

9 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

4 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

15 cm

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A 11 cm
The parallel rays will converge at $10 c m$ from the lens if no glass slab was present, but due to glass slab, shift in position of image $= t (1 - \frac{1}{μ}) = 3 (1 - \frac{1}{3 / 2}) = 3 \times \frac{1}{3} = 1 c m$
$∴$ distance of final image from lens $= 10 + 1 = 11 c m$

Suggest Corrections

thumbs-up

0

Similar questions

Focal length of a thin convex lens is 30 cm. At a distance of 10 cm from the lens, there is a plane refracting surface of refractive index $\frac{3}{2}$ . A parallel beam of monochromatic light rays incident on the lens, then they converge at a distance of

Q. A point object is placed at a distance of

25 c m

from a convex lens. Its focal length is

22 c m

. A glass slab of refractive index

1.5

is inserted between the lens and the object, then the image is formed at infinity. Find the thickness of the glass slab (in cm).

Q. A point object is placed at a distance of 25 cm from a convex lens of focal length 20 cm. If a glass slab of thickness t and refractive index 1.5 is inserted between the lens and the object the image is formed at infinity. The thickness t is

Q. A point object is placed at a distance of

25 c m

from a convex lens of focal length

20 c m

. If a glass slab of thickness

t

and refractive index

1.5

is inserted between the lens and the object, the image is formed at infinity. The thickness

t

Q. A convex lens of focal length

20 c m

is placed coaxially with a concave mirror of focal length

10 c m

at a distance of

50 c m

apart from each other. A beam of light coming parallel to the principal axis is incident on the convex lens. Find the position of the final image formed by this combination.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Image formation by convex lens

PHYSICS

Watch in App

explore_more_icon

Explore more

Image Formation by Convex Lens

Standard X Physics

Join BYJU'S Learning Program

CrossIcon