10th Physics Test No 2 

Welcome to English academy 

(Sound)

1 Which form of energy is sound?

 A. Electrical

 B. Mechanical✔️

 C. Thermal

 D. Chemical

2 For normal person audible frequency 

range for sound wave lies between.

 A. 10 Hz and 10KHz

 B. 20 Hz and 20KHz✔️

 C. 25 Hz and 25KHz

 D. 30 Hz and 30KHz

3 Old people can not hear sound above then 

_____ Hz

 A. 1000

 B. 15000✔️

 C. 20000

 D. 10000

4 The speed of sound in the air at one 

atmospheric pressure at room temperature 

is

 A. 343 ms-1✔️

 B. 346 ms-1

 C. 349 ms-1

 D. 339 ms-1

5 The distance between two consecutive 

compressions or rarefactions in 

longitudinal waves is called:

 A. Amplitude

 B. Wavelength✔️

 C. Half wavelength

 D. 1/4 wavelength

6 Mathematical formula of sound level (in 

bel) is:

 A. S.L = 10 log I/Io (bel)

 B. S.L = K log I/Io (bel)

 C. S.L = Log I/Io (bel)✔️

 D. S.L = 10 log Io/I (bel)

7 The frequency of silent whistle is:

 A. 20,000 Hz - 25000 Hz✔️

 B. 2000 Hz - 25000 Hz

 C. 200 Hz - 2000 Hz

 D. 25000 Hz

8 How does sound travel from its source to 

your ear?

 A. By changes in air pressure✔️

 B. By vibration in wires or strings

 C. By electromagnetic waves

 D. By infrared waves

9. When frequency of sound wave is 

increased, which of the following 

decreases?

1Wavelength ii) Period iii) Amplitude

 A. i only

 B. (iii) only

 C. i and ii only✔️

 D. i and iii only

10 Pitch of sound depends upon:

 A. Frequency✔️

 B. Amplitude

 C. Intensity

 D. Time period

11 To hear echoes, the minimum distance of 

the obstacle from source of sound should 

be:

 A. 10 m

 B. 15 m

 C. 17 m✔️

 D. 20 m

 12 Which is an example of longitudinal 

waves?

 (a) sound wave✔️ (b) light wave

 (c) radio wave (d) water wave

13 Astronauts in space need to communicate 

with each other by radio

links because

(a) sound waves travel very slowly in 

space

(b) sound waves travel very fast in space

(c) sound waves cannot travel in space✔️

 (d) sound waves have low frequency in 

space

14 The loudness of sound mostly depends 

upon:

 (a) frequency (b) period (c) wavelength 

(d) amplitude✔️

15 In general, the Speed of sound is 

greater in:

 (a) Solids ✔️(b) Liquids (c) gases (d) 

none of these

16 Which organism can hear sound of 

frequency upto 120,000Hz :

(a) Bats ✔️(b) Mice (c) Dogs (d) Cats

17 Longitudinal waves move faster through:

(a) gas 

(b) liquid 

(c) solid ✔️

(d) vacuum

10th physics Test No 3

Welcome to English academy 

(Spherical mirrors and lenses)

1 The S.I unit of power of a lens is:

 A. Dioptre✔️

 B. Volt

 C. Ampere

 D. Watt

2 ___________ is always virtual in case of 

convex mirror.

 A. p

 B. image✔️

 C. object

 D. all of these

3 Focal length for concave mirror is :

 A. -ve

 B. +ve✔️

 C. same

 D. none of these

4 in a convex mirror the size of the 

image:

 A. Is smaller than the size of the object

 B. Is greater than the size of the object

 C. Depends upon the position of the object✔️

 D. Is equal to the size of the object

5 After refraction from a convex lens, 

rays of light parallel to the principal 

axis converge at a point, this point of 

convex lens is called:

 A. Principal focus✔️

 B. Pole

 C. Focal length

 D. Optical center

6 A normal eye can see near objects 

clearly at a distance of:

 A. 20 cm

 B. 25 cm✔️

 C. 30 cm

 D. 35 cm

7 When light passes through a prism it 

deviates from its original path due to:

 A. Reflection

 B. Diffraction

 C. Interference

 D. Refraction✔️

 8 The mirror whose inner surface is 

reflecting is called:

 A. Concave mirror✔️

 B. Convex mirror

 C. Miroor

 D. Lens

9 Power of lens is:

 A. q/p

 B. 1/q

 C. 1/p

 D. 1/f✔️

10 Optical fibre are:

 A. Cheap

 B. Flexible

 C. Lighter

 D. All of these✔️

11 When a ray of light enters from denser 

medium to rare medium, the angle of 

incidence for which angle of refraction is 

90is called:

 A. angle of incidence

 B. critical angle✔️

 C. angle of refrection

 D. None of these

12 Sun light consist of ____________ 

colour

 A. 6

 B. 7✔️

 C. 5

 D. 2

13 To see from submarine the ship at the 

surface of water , we use:

 A. Telescope

 B. Microscope

 C. Peri scope✔️

 D. Prism

10th Physics Test No 2 

Welcome to English academy 

(Sound)

1 Which form of energy is sound?

 A. Electrical

 B. Mechanical✔️

 C. Thermal

 D. Chemical

2 For normal person audible frequency 

range for sound wave lies between.

 A. 10 Hz and 10KHz

 B. 20 Hz and 20KHz✔️

 C. 25 Hz and 25KHz

 D. 30 Hz and 30KHz

3 Old people can not hear sound above then 

_____ Hz

 A. 1000

 B. 15000✔️

 C. 20000

 D. 10000

4 The speed of sound in the air at one 

atmospheric pressure at room temperature 

is

 A. 343 ms-1✔️

 B. 346 ms-1

 C. 349 ms-1

 D. 339 ms-1

5 The distance between two consecutive 

compressions or rarefactions in 

longitudinal waves is called:

 A. Amplitude

 B. Wavelength✔️

 C. Half wavelength

 D. 1/4 wavelength

6 Mathematical formula of sound level (in 

bel) is:

 A. S.L = 10 log I/Io (bel)

 B. S.L = K log I/Io (bel)

 C. S.L = Log I/Io (bel)✔️

 D. S.L = 10 log Io/I (bel)

7 The frequency of silent whistle is:

 A. 20,000 Hz - 25000 Hz✔️

 B. 2000 Hz - 25000 Hz

 C. 200 Hz - 2000 Hz

 D. 25000 Hz

8 How does sound travel from its source to 

your ear?

 A. By changes in air pressure✔️

 B. By vibration in wires or strings

 C. By electromagnetic waves

 D. By infrared waves

9. When frequency of sound wave is 

increased, which of the following 

decreases?

1Wavelength ii) Period iii) Amplitude

 A. i only

 B. (iii) only

 C. i and ii only✔️

 D. i and iii only

10 Pitch of sound depends upon:

 A. Frequency✔️

 B. Amplitude

 C. Intensity

 D. Time period

11 To hear echoes, the minimum distance of 

the obstacle from source of sound should 

be:

 A. 10 m

 B. 15 m

 C. 17 m✔️

 D. 20 m

 12 Which is an example of longitudinal 

waves?

 (a) sound wave✔️ (b) light wave

 (c) radio wave (d) water wave

13 Astronauts in space need to communicate 

with each other by radio

links because

(a) sound waves travel very slowly in 

space

(b) sound waves travel very fast in space

(c) sound waves cannot travel in space✔️

 (d) sound waves have low frequency in 

space

14 The loudness of sound mostly depends 

upon:

 (a) frequency (b) period (c) wavelength 

(d) amplitude✔️

15 In general, the Speed of sound is 

greater in:

 (a) Solids ✔️(b) Liquids (c) gases (d) 

none of these

16 Which organism can hear sound of 

frequency upto 120,000Hz :

(a) Bats ✔️(b) Mice (c) Dogs (d) Cats

17 Longitudinal waves move faster through:

(a) gas 

(b) liquid 

(c) solid ✔️

(d) vacuum

10th physics Test No 3

Welcome to English academy 

(Spherical mirrors and lenses)

1 The S.I unit of power of a lens is:

 A. Dioptre✔️

 B. Volt

 C. Ampere

 D. Watt

2 ___________ is always virtual in case of 

convex mirror.

 A. p

 B. image✔️

 C. object

 D. all of these

3 Focal length for concave mirror is :

 A. -ve

 B. +ve✔️

 C. same

 D. none of these

4 in a convex mirror the size of the 

image:

 A. Is smaller than the size of the object

 B. Is greater than the size of the object

 C. Depends upon the position of the object✔️

 D. Is equal to the size of the object

5 After refraction from a convex lens, 

rays of light parallel to the principal 

axis converge at a point, this point of 

convex lens is called:

 A. Principal focus✔️

 B. Pole

 C. Focal length

 D. Optical center

6 A normal eye can see near objects 

clearly at a distance of:

 A. 20 cm

 B. 25 cm✔️

 C. 30 cm

 D. 35 cm

7 When light passes through a prism it 

deviates from its original path due to:

 A. Reflection

 B. Diffraction

 C. Interference

 D. Refraction✔️

 8 The mirror whose inner surface is 

reflecting is called:

 A. Concave mirror✔️

 B. Convex mirror

 C. Miroor

 D. Lens

9 Power of lens is:

 A. q/p

 B. 1/q

 C. 1/p

 D. 1/f✔️

10 Optical fibre are:

 A. Cheap

 B. Flexible

 C. Lighter

 D. All of these✔️

11 When a ray of light enters from denser 

medium to rare medium, the angle of 

incidence for which angle of refraction is 

90is called:

 A. angle of incidence

 B. critical angle✔️

 C. angle of refrection

 D. None of these

12 Sun light consist of ____________ 

colour

 A. 6

 B. 7✔️

 C. 5

 D. 2

13 To see from submarine the ship at the 

surface of water , we use:

 A. Telescope

 B. Microscope

 C. Peri scope✔️

 D. Prism