Class 10 Quiz Level 2 (Moderate) – Light Reflection and Refraction

Total questions: 20

A ray of light parallel to the principal axis of a convex mirror appears to diverge from:

Topic: Spherical Mirrors

Deselect Answer

The center of curvature

The principal focus

The pole

The focal length

None

Which phenomenon explains the formation of a mirage?

Topic: Refraction of Light

Deselect Answer

Reflection

Refraction

Dispersion

Scattering

None

When white light passes through a prism, it splits into different colours due to:

Topic: Refraction of Light

Deselect Answer

Reflection

Refraction

Dispersion

Scattering

None

The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

Topic: Reflection of Light

Deselect Answer

5 cm

10 cm

20 cm

40 cm

None

If an object is placed between the pole and the focal point of a concave mirror, the image formed is:

Topic: Spherical Mirrors

Deselect Answer

Real and inverted

Virtual and erect

Real and erect

Virtual and inverted

None

The magnification of an image formed by a plane mirror is:

Topic: Reflection of Light

Deselect Answer

Less than 1

Equal to 1

More than 1

Zero

None

An object is placed 10 cm from a concave lens of focal length 15 cm. The position of the image is:

Topic: Refraction by Lenses

Deselect Answer

-6 cm

-7.5 cm

-9 cm

-12 cm

None

The far point of a person suffering from myopia is:

Topic: Human Eye

Deselect Answer

At infinity

Beyond 25 cm

Less than 25 cm

Less than infinity

None

The power of accommodation of the human eye is:

Topic: Human Eye

Deselect Answer

Infinite

Zero

Limited

Variable

None

10.

A concave lens of focal length 10 cm forms an image 5 cm from the lens. The object distance is:

Topic: Refraction by Lenses

Deselect Answer

15 cm

10 cm

7.5 cm

5 cm

None

11.

The refractive index of diamond is 2.42. What is the speed of light in diamond?

Topic: Refraction of Light

Deselect Answer

$ \displaystyle 3\times {{10}^{8}}m/s$

$ \displaystyle 1.24\times {{10}^{8}}m/s$

$ \displaystyle 1.24\times {{10}^{6}}m/s$

$ \displaystyle 7.26\times {{10}^{8}}m/s$

None

12.

A lens has a focal length of -10 cm. What is its power?

Topic: Refraction by Lenses

Deselect Answer

-1 D

-10 D

-0.1 D

-5 D

None

13.

An object is placed at the focal point of a convex mirror. The image formed will be:

Topic: Spherical Mirrors

Deselect Answer

Real and at the focal point

Virtual and at the focal point

Real and at infinity

Virtual and diminished

None

14.

If an object is placed 5 cm in front of a concave mirror with a focal length of 10 cm, the image formed will be:

Topic: Reflection of Light

Deselect Answer

Real, inverted, and smaller

Real, inverted, and larger

Virtual, erect, and smaller

Virtual, erect, and larger

None

15.

A person can see objects clearly only when they are between 25 cm and 2 m from the eye. This person is suffering from:

Topic: Human Eye

Deselect Answer

Myopia

Hypermetropia

Presbyopia

Astigmatism

None

16.

A ray of light strikes a plane mirror at an angle of 45° with the mirror surface. The angle of reflection will be:

Topic: Reflection of Light

Deselect Answer

45°

90°

135°

60°

None

17.

The bending of light around the corners of an obstacle is called:

Topic: Refraction of Light

Deselect Answer

Reflection

Refraction

Diffraction

Dispersion

None

18.

Which of the following statements is true for a convex mirror?

Topic: Spherical Mirrors

Deselect Answer

It forms a real image for a distant object

It forms a virtual image that is always smaller than the object

It forms an inverted image

It has a focal point that lies behind the mirror

None

19.

A lens has a power of +2.5 D. What type of lens is it?

Topic: Refraction by Lenses

Deselect Answer

Concave lens

Convex lens

Cylindrical lens

Bifocal lens

None

20.

The part of the eye responsible for adjusting the focal length of the lens is the:

Topic: Human Eye

Deselect Answer

Iris

Pupil

Retina

Ciliary muscles

None

1 out of 20

Time's up

Class 10 Quiz Level 2 (Moderate) – Light Reflection and Refraction

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