Class 10 Practice - Level 1 - Light - Reflection and Refraction

Total questions: 40

What is the angle of incidence if a ray of light strikes a plane mirror at an angle of 30° to the normal?

Topic: Reflection of Light

30°

60°

90°

45°

None

The image formed by a plane mirror is:

Topic: Reflection of Light

Real and inverted

Real and erect

Virtual and inverted

Virtual and erect

None

When light reflects off a surface, the angle of incidence is equal to the:

Topic: Reflection of Light

Angle of refraction

Angle of reflection

Angle of deviation

Angle of emergence

None

A ray of light passing through the center of curvature of a concave mirror:

Topic: Reflection of Light

Passes through the principal focus

Retraces its path

Is reflected parallel to the principal axis

None of the above

None

The focal length of a plane mirror is:

Topic: Reflection of Light

Infinity

Zero

Equal to the radius of curvature

Cannot be determined

None

The bending of light when it passes from one medium to another is called:

Topic: Refraction of Light

Reflection

Refraction

Dispersion

Scattering

None

A light ray traveling from air into glass will:

Topic: Refraction of Light

Speed up and bend away from the normal

Speed up and bend towards the normal

Slow down and bend away from the normal

Slow down and bend towards the normal

None

The refractive index of a medium is defined as:

Topic: Refraction of Light

The ratio of the speed of light in a vacuum to the speed of light in the medium

The ratio of the speed of light in the medium to the speed of light in a vacuum

The angle of incidence to the angle of refraction

The angle of refraction to the angle of incidence

None

Which of the following has the highest refractive index?

Topic: Refraction of Light

Water

Air

Diamond

Glass

None

10.

When a ray of light passes from water to air, it:

Topic: Refraction of Light

Bends towards the normal

Bends away from the normal

Passes undeviated

Is reflected back into the water

None

11.

The point on the principal axis where parallel rays of light converge after reflection from a concave mirror is called:

Topic: Spherical Mirrors

Center of curvature

Principal focus

Pole

Radius of curvature

None

12.

The distance between the pole and the principal focus of a concave mirror is called:

Topic: Spherical Mirrors

Radius of curvature

Focal length

Diameter

Magnification

None

13.

If the focal length of a convex mirror is 10 cm, its radius of curvature is:

Topic: Spherical Mirrors

5 cm

10 cm

20 cm

30 cm

None

14.

Which type of mirror is used in vehicle rearview mirrors?

Topic: Spherical Mirrors

Plane mirror

Concave mirror

Convex mirror

Parabolic mirror

None

15.

The image formed by a convex mirror is always:

Topic: Spherical Mirrors

Real and inverted

Virtual and erect

Real and erect

Virtual and inverted

None

16.

A convex lens is also known as:

Topic: Refraction by Lenses

Converging lens

Diverging lens

Planar lens

Cylindrical lens

None

17.

A concave lens is also known as:

Topic: Refraction by Lenses

Converging lens

Diverging lens

Planar lens

Cylindrical lens

None

18.

The image formed by a concave lens is always:

Topic: Refraction by Lenses

Real and inverted

Virtual and erect

Real and erect

Virtual and inverted

None

19.

If the focal length of a concave lens is -15 cm, its power is:

Topic: Refraction by Lenses

+15 diopters

-15 diopters

+6.67 diopters

-6.67 diopters

None

20.

The unit of power of a lens is:

Topic: Refraction by Lenses

Meter

Centimeter

Diopter

Watt

None

21.

The part of the eye that controls the amount of light entering it is:

Topic: Human Eye

Cornea

Lens

Retina

Iris

None

22.

The image formed on the retina of the human eye is:

Topic: Human Eye

Real and erect

Virtual and erect

Virtual and inverted

Real and inverted

None

23.

Which part of the human eye provides most of the refraction of light entering the eye?

Topic: Human Eye

Cornea

Lens

Retina

Pupil

None

24.

The defect of vision in which a person cannot see distant objects clearly is called:

Topic: Human Eye

Myopia

Hypermetropia

Presbyopia

stigmatism

None

25.

The focal length of the eye lens increases when the eye muscles:

Topic: Human Eye

Contract

Relax

Remain unchanged

None of the above

None

26.

Which of the following is used to correct hypermetropia?

Topic: Human Eye

Concave lens

Convex lens

Cylindrical lens

None of the above

None

27.

The least distance of distinct vision for a normal human eye is:

Topic: Human Eye

10 cm

25 cm

50 cm

100 cm

None

28.

The power of accommodation of the eye refers to:

Topic: Human Eye

The ability to see in dim light

The ability to see in bright light

The ability to adjust the focal length of the lens

The ability to distinguish colours

None

29.

Which optical instrument uses a concave mirror to form images?

Topic: Optical Instruments

Microscope

Telescope

Camera

Magnifying glass

None

30.

The magnification produced by a convex lens is:

Topic: Optical Instruments

Always less than 1

Always more than 1

Always equal to 1

Can be less than, more than, or equal to 1

None

31.

Which part of the microscope is responsible for focusing light on the specimen?

Topic: Optical Instruments

Eyepiece

Objective lens

Condenser

Stage

None

32.

The primary function of the eyepiece in a microscope is to:

Topic: Optical Instruments

Magnify the image formed by the objective lens

Collect light from the specimen

Reflect light onto the specimen

Control the intensity of light

None

33.

In a simple microscope, the final image is:

Topic: Optical Instruments

Real and inverted

Real and erect

Virtual and inverted

Virtual and erect

None

34.

Which of the following lenses would you use to make a simple microscope?

Topic: Optical Instruments

Concave lens

Convex lens

Cylindrical lens

Bifocal lens

None

35.

The primary function of a camera lens is to:

Topic: Optical Instruments

Magnify objects

Capture and focus light to form an image

Reflect light

Disperse light

None

36.

The splitting of white light into its constituent colours is called:

Topic: Dispersion and Scattering

Reflection

Refraction

Dispersion

Scattering

None

37.

The colour of the sky appears blue due to:

Topic: Dispersion and Scattering

Dispersion of light

Scattering of light

Reflection of light

Refraction of light

None

38.

Which colour of light is least scattered by the atmosphere?

Topic: Dispersion and Scattering

Blue

Green

Red

Yellow

None

39.

The phenomenon responsible for the twinkling of stars is:

Topic: Dispersion and Scattering

Reflection

Refraction

Dispersion

Scattering

None

40.

The rainbow is formed due to:

Topic: Dispersion and Scattering

Reflection and scattering

Refraction and dispersion

Dispersion and reflection

Scattering and refraction

None

1 out of 40

Time's up

Class 10 Practice - Level 1 - Light - Reflection and Refraction

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