Physics 10 Unit 12 MCQs Tests

In this post, we have prepared 4 MCQs tests of Federal Board Physics 10 Unit 12 MCQs Tests. For more Class 10 Physics MCQs Tests visit this page.

Physics 10 Unit 12 MCQs Tests

Practice MCQs Test No 1

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72

Class 10 Physics

Chapter 12

Practice MCQs Test No 1

1 / 20

Which statement is correct about convex mirror?

All of the given statements are true

Outer curved surface is reflecting

Size of image is smaller than object

Only virtual erect image is formed

2 / 20

A line joining centre of curvature and pole of the spherical mirror is

Centre of curvature

Pole

Principal focus

Principal axis

3 / 20

A spherical mirror whose outer curved surface is reflecting is called

Concave mirror

Convex mirror

Concave lens

Convex lens

4 / 20

The rough surfaces of object reflect the rays of light in many directions is called

Regular reflection

Irregular reflection

Refraction

Interference

5 / 20

Vertex is the midpoint of the curved surface of spherical mirror is also called

Principal focus

Pole

Radius of curvature

Principalaxis

6 / 20

Plank suggested that light consists of small packets of energy called:

Positrons

Photons

Neutrons

Electrons

7 / 20

The angle between the normal and the reflected ray is called angle of

Incidence

Diffraction

Reflection

Refraction

8 / 20

Mirror formula is

\frac { 1 }{ f } =\frac { 1 }{ p } +\frac { 1 }{ q }

\frac { 1 }{ f } =\frac { 1 }{ p } -\frac { 1 }{ q }

\frac { 1 }{ f } =\frac { 1 }{ p } -\frac { q }{ p }

\frac { 1 }{ f } =\frac { 1 }{ q } +\frac { p }{ q }

9 / 20

Which statement is incorrect about concave mirror?

Size of image depends upon position of the object

Only virtual images are formed

Both virtual and real images can form

Inner surface of spherical mirror is reflecting

10 / 20

The bending of light as it passes from one transparent medium

Reflection

Refraction

Incidence

Reverberation

11 / 20

The incident ray, the normal, and the reflected ray at the point of incidence all lie in the

Opposite direction

y & z axis

Same plane

x and y axis

12 / 20

Convex mirror produce images

Smaller than object

Larger than object

Equal to object

Very large in size

13 / 20

The angle between incident ray and normal N is

Angle of incidence

Normal angle

Angle of reflection

Angle of refraction

14 / 20

Angle of incidence is represented by

i

e

p

R

15 / 20

According to law of reflection

i=r

i>r

i<r

r>i

16 / 20

In concave mirror the surface is reflecting;

Outer curved

Side of the mirror

Outer surface

Inner curved surface

17 / 20

Regular reflection is reflection by the

Smooth and rough surfaces

Irregular surface

Rough surface

Smooth surface

18 / 20

Focal length of spherical mirror is R

R/9

R/2

R/3

R/4

19 / 20

The distance from the pole to the principal focus measured along the principal axis is

Principal focus

Focal length

Diameter

Radius of curvature

20 / 20

The relationship between object distance p, image distance q focal length of the mirror is called;

Distance from mirror

Mirror focal length

Lens formula

Mirror formula

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Practice MCQs Test No 2

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42

Class 10 Physics

Chapter 12

Practice MCQs Test No 2

1 / 20

\frac { speed\quad of\quad light\quad in\quad vacuum }{ speed\quad of\quad light\quad in\quad medium } =\quad ?

Reflective index

Refractive index

Snell's law

Critical angle

2 / 20

SI unit of power of lens is:

Millimeter

Diopter

Centimeter

Meter

3 / 20

The distance between the optical centre and the principal focus is.

Optical length

Principal focus

Focal length

Principal axis

4 / 20

Lenses are used in optical devices;

Microscope

Eye glasses

Camera

All of these

5 / 20

When a ray of light enters from a denser medium to a rarer medium

It bends towards inside

It bends away from the normal

None of these

It bends toward the normal

6 / 20

Optical centre is represented by

F

A

f

C

7 / 20

For a concave lens, the parallel rays appear to come from a point behind the lens is called

Principal focus

Principal axis

Focal length

Optical length

8 / 20

The line passing through the two centres of curvatures of the lens is called

Optical centre

Focal length

Principal focus

Principal axis

9 / 20

Lens thick at the centre but thin at the edges is;

Plane

Concave

Diverging

Convex

10 / 20

No refraction occurs when the angle of incidence is

Smaller than the critical angle

Larger than the critical angle

Equal to the critical angle

Very small than the critical angle

11 / 20

Speed of light in air is approximately

4 x 10⁹ ms⁻¹

3.0 x 10⁸ ms⁻¹

4 x 10¹⁴ ms⁻¹

3 x 10⁷ ms⁻¹

12 / 20

In lens number of curved surfaces at least;

One

Four

Three

Two

13 / 20

The speed of light in water is approximately

2.0 x 10⁸ ms⁻¹

3 x 10⁸ ms⁻¹

2.3 x 10⁸ ms⁻¹

3 x 10⁷ ms⁻¹

14 / 20

The speed of light is greater in

Air

Water

Solid

Glass

15 / 20

According to law of refraction

\frac { sin\quad i }{ sin\quad r } =\quad constant

\frac { sin\quad i }{ sin\quad r } >\quad i

\frac { sin\quad i }{ sin\quad r } >\quad n

\frac { sin\quad i }{ sin\quad r } >\quad r

16 / 20

It is a transparent body (made of optical glass) with at least two polished plane faces inclined towards each other from which light is refracted;

Lens

Prism

Camera

Mirror

17 / 20

The lens which causes incident parallel rays to converge at a point is;

Concave lens

Both Convex and converging lense

Converging lens

Convex lens

18 / 20

\frac { sin\quad i }{ sin\quad r } =\quad n\quad =\quad \frac { { n }_{ 2 } }{ { n }_{ 1 } }  is called

Snell's law

Boyl’s law

Newton's law

Charless's law

19 / 20

The angle of incidence that causes the refracted ray in the rarer medium to bend through 99ᵒ is called

Angle of incidence

Critical angle

Angle of reflection

Angle of refraction

20 / 20

1 D =?

1 m⁻²

1 cm⁻¹

1 m⁻³

1 m⁻¹

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Practice MCQs Test No 3

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33

Class 10 Physics

Chapter 12

Practice MCQs Test No 3

1 / 20

The study of behavior of light is called;

Geometrical optics

Optics

Plasma

Geometry

2 / 20

Which statement is correct about image formed by camera?

All of these

Real image is formed

Diminished image is formed

Inverted image is formed

3 / 20

The working principle of photograph enlarger is the same as;

Telescope

Camera

Slide projector

Endoscope

4 / 20

Lens formula is

1/f=1/p+1/q

1/f=q/p+1/q

1/f=1/p-1/q

1/p=1/f+1/q

5 / 20

For seeing tiny objects we use microscope of;

Low resolving power

Light microscope

Electron microscope

High resolving power

6 / 20

The image with convex lens is formed at 2F, real, Inverted, the same size as the object when the object is placed at:

2F

C

F

Between F and 2F

7 / 20

Which pipe is a bundle of thousands of optical fibers bounded together?

Projector

Microscope

Telescope

lightpipe

8 / 20

It is used to explore the interior organs of the body?

Projector

Microscope

Endoscope

Telescope

9 / 20

Endoscope which is used to diagnose throat is;

Cystoscope

Bronschoscope

Gastroscope

None of these

10 / 20

When object is at F the image is;

Small

Not formed

Real

Inverted

11 / 20

Endoscope used to diagnose the stomach is;

Bronchoscope

Gastroscope

Pancreoscope

Cystoscope

12 / 20

It has positive focal length;

Simple lens

Concave lens

None of above

Convex lens

13 / 20

For a converging lens f is;

Negative

Smeller

Positive

Sometime negative and sometime positive

14 / 20

Which statement is correct about compound microscope?

Focal length of objective lens is smaller than eye piece.

All given statements are true.

It is used to see very small object

Distance between objective lens and eye piece is greater than fₒ+fₑ.

15 / 20

In case of convex lens when object is placed beyond 2F, the Image is formed;

Smaller than object

Between F and 2F

Real, inverted

All of these

16 / 20

A magnifying glass is a convex lens which is used to produce magnified images of small objects. It is also called;

Electron microscope

Simple microscope

Compound microscope

Light microscope

17 / 20

In mirrors images are formed through reflection, but lenses form images through;

Reflection

Incidence

Diffraction

Refraction

18 / 20

In case of photograph enlarger the object is placed at distance;

Both more than F and less than 2F

More than F

Less than 2F

More than 3F

19 / 20

Optical device is;

Camera

All of these

Photograph enlarger

Slide projector

20 / 20

If the object is on the right side of the lens then p is;

Smaller

Negative

Positive

Larger

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Practice MCQs Test No 4

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40

Class 10 Physics

Chapter 12

Practice MCQs Test No 4

1 / 17

Light enters the eye through transparent membrane called;

Retina

Pupil

Iris

Cornea

2 / 17

Short sighted may be due to eyeball being

Too thick

Too short

Too thin

Too long

3 / 17

Long sightedness is caused due to ________ eye ball:

Thin

Thick

Both thick and small

small

4 / 17

Power of concave lens is:

Less

Positive

Greater

Negative

5 / 17

The variation of focal length of eye lens is called;

Variation

Accommodation

Resolution

Magnification

6 / 17

When people cannot see distant objects dearly without the aid of spectacles the defect of vision is;

Far sightedness

near-sightedness

Both Short-sighted and near-sightedness

Short-sighted

7 / 17

The nearsighted eye can be corrected by using;

Concave mirror

Both converging and diverging lenses

Diverging lens

Converging lens

8 / 17

Have ability to move eye lens forward or backward.

Dog

Birds

Human

Fish

9 / 17

The coloured portion of eye controls the amount of light reaching the retina.

Iris

Cornea

Pupil

Eye lens

10 / 17

Near point of a normal human being is:

50cm

100cm

25cm

Infinity

11 / 17

Magnification of telescope can be determined by using formula;

M=fₒ/fₑ

M=F/L

M=fₒ/fₒ

M=Lₒ/fₒ

12 / 17

The disability of the eye to form distinct images of nearby object on retina is called forsightedness or:

isometropia

hypermetropia

Myopia

Short sightedness

13 / 17

Long sightedness is removed by:

Concave lens

Concave mirror

Convex mirror

Convex lens

14 / 17

It is an optical instrument which is used to observe distant objects using lens or mirror;

Light microscope

Kaledoscope

Telescope

microscope

15 / 17

The magnification of compound microscope is;

M=L/fₒ

M=(1+d/fₑ)

M=L/fₒ(1+d/fₑ)

M=L/fₑ(1+d/fₑ)

16 / 17

Human eye acts like;

Microscope

Telescope

Kaledoscope

Camera

17 / 17

Farsightedness is corrected by using;

Diverging lens

Concave mirror

Convex mirror

Converging lens

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