The image of a candle flame placed at a distance of 30cm from a mirror is formed on a screen placed in front of the mirror at a distance of 60cm from its pole. What is the nature of the mirror? Find its focal length.

F = - 20 cm Concave Mirror Real & Inverted Image

F = + 20 cm Concave Mirror Virtual & Erect Image

F = - 20 cm Convex Mirror Real & Inverted Image

F = + 20 cm Convex Mirror Virtual & Erect Image

A convex mirror used for rear view on an automobile has a radius of curvature of 3 m. If a bus is located at 5 m from this mirror. Find out the position, nature and size of the image.

v = + 1.15 m m = + 0.23 Virtual & Erect

v = - 1.15 m m = - 0.23 Virtual & Erect

v = - 1.5 m m = + 0.23 Real & Inverted

v = + 1.5 m m = + 2.3 Real & Inverted

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the nature, size and position of the image formed.

v = + 6 cm m = + 0.6 Virtual and Erect

v = - 6 cm m = - 0.6 Real & Inverted

v = - 6 cm m = - 0.6 Virtual and Erect

v = + 6 cm m = + 0.6 Real & Inverted

Which of the following lenses would you prefer to use while reading small letters of newspaper?

A convex lens of focal length 5 cm.

A convex lens of focal length 50 cm.

A concave lens of focal length 5 cm.

A concave lens of focal length 50 cm.

An object 5 cm in size is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 40 cm. Find out the position, size and nature of the image formed.

v = + 10 cm h' = + 2.5 cm Virtual, Erect and smaller in size.

v = - 20 cm h' = - 0.5 cm Real, Inverted and enlarge in size.

v = + 20 cm h' = + 0.5 cm Real, Inverted and enlarge in size.

v = - 10 cm h' = - 2.5 cm Virtual, Erect and smaller in size.

10th Light

Authored by mohit singh

Physics

10th Grade

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

The radius of curvature of a convex lens is 20cm. What is its focal length?

10 cm

20 cm

30 cm

40 cm

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Name the type of mirrors used in the following situations:
(i) Used by Dentist.
(ii) Rear-view mirror of vehicle

(i) Diverging mirror

(ii) Converging mirror

(i) & (ii) Both Converging mirror

(i) Converging mirror

(ii) Diverging mirror

(i) & (ii) Both Diverging mirror.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In the given ray diagram, which of the following path of the refracted ray is correct?

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

An object is kept at a distance of 4m in front of a spherical mirror, which forms its erect image at a distance of 1m
from the mirror. What is the magnification? Is the mirror concave or convex?

m = +4

Concave Mirror

m = -4

Convex mirror

m = - 1/4

Convex Mirror

m = +1/4

Convex Mirror

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A concave mirror produces a three times magnified image on a screen. If the object is placed 20cm in front of the mirror, What is the image distance?

-20 cm

-40cm

-60 cm

-10 cm

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Calculate the power of a lens whose focal length is +40 cm. Also Identify the nature of the lens.

P = +0.25 D

Concave lens.

P = +2.5 D

Convex lens

P = +0.25 D

Concave lens

P = +2.5 D

Convex Lens

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Complete the path of the refracted ray of the given incident light on the given convex lens.

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10th Light

The radius of curvature of a convex lens is 20cm. What is its focal length?

Name the type of mirrors used in the following situations:
(i) Used by Dentist.
(ii) Rear-view mirror of vehicle

In the given ray diagram, which of the following path of the refracted ray is correct?

An object is kept at a distance of 4m in front of a spherical mirror, which forms its erect image at a distance of 1m
from the mirror. What is the magnification? Is the mirror concave or convex?

A concave mirror produces a three times magnified image on a screen. If the object is placed 20cm in front of the mirror, What is the image distance?

Calculate the power of a lens whose focal length is +40 cm. Also Identify the nature of the lens.

Complete the path of the refracted ray of the given incident light on the given convex lens.

The image of a candle flame placed at a distance of 30cm from a mirror is formed on a screen placed in front of the mirror at a distance of 60cm from its pole. What is the nature of the mirror? Find its focal length.

A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.

The refractive indices of glass and water with respect to air are 3/2 and 4/3 respectively. If the speed of light in glass is 2 x 10⁸ m/s, find the speed of light in water.

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Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Physics

10th Light

The radius of curvature of a convex lens is 20cm. What is its focal length?

Name the type of mirrors used in the following situations:(i) Used by Dentist.(ii) Rear-view mirror of vehicle

In the given ray diagram, which of the following path of the refracted ray is correct?

An object is kept at a distance of 4m in front of a spherical mirror, which forms its erect image at a distance of 1m from the mirror. What is the magnification? Is the mirror concave or convex?

A concave mirror produces a three times magnified image on a screen. If the object is placed 20cm in front of the mirror, What is the image distance?

Calculate the power of a lens whose focal length is +40 cm. Also Identify the nature of the lens.

Complete the path of the refracted ray of the given incident light on the given convex lens.

The image of a candle flame placed at a distance of 30cm from a mirror is formed on a screen placed in front of the mirror at a distance of 60cm from its pole. What is the nature of the mirror? Find its focal length.

A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.

The refractive indices of glass and water with respect to air are 3/2 and 4/3 respectively. If the speed of light in glass is 2 x 108 m/s, find the speed of light in water.

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Physics

Name the type of mirrors used in the following situations:
(i) Used by Dentist.
(ii) Rear-view mirror of vehicle

An object is kept at a distance of 4m in front of a spherical mirror, which forms its erect image at a distance of 1m
from the mirror. What is the magnification? Is the mirror concave or convex?

The refractive indices of glass and water with respect to air are 3/2 and 4/3 respectively. If the speed of light in glass is 2 x 10⁸ m/s, find the speed of light in water.