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Free Online Mock Test for Class 10. We covered all the Free Online Mock Test for Class 10 in this post for free so that you can practice well for the exam.
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Mock Test for Class 10 Students
Which of the following is true about the speed of sound? (i) Sound propagates through a medium at a finite speed. (ii) The speed of sound decreases when we go from a solid to a gaseous state. (iii) Speed of sound increases with an increase in temp.
(a) only (i)
(b) (i) & (iii)
(c) (i), (ii) & (iii)
(d) (i) & (ii)
Option c – (i), (ii) & (iii)
Which one of the following statements is correct? The velocity of sound :
(a) Does not depend upon the nature of media
(b) is maximum in gases and minimum in liquids
(c) is maximum in solids and minimum in liquids
(d) is maximum in solids and minimum in gases
Option d – is maximum in solids and minimum in gases
Which of the following statements is NOT correct regarding the travel of sound waves?
(a) Sound waves can travel through water
(b) Sound waves can travel through the air
(c) Sound waves can travel through steel
(d) Sound waves can travel through vacuum
Option d – Sound waves can travel through vacuum
A vibrating body
(a) will always produce sound
(b) may or may not produce sound if the amplitude of vibration is low
(c) will produce a sound that depends upon the frequency
(d) None of these
Option c – will produce a sound that depends upon the frequency
The special technique used in ships to calculate the depth of ocean beds is
(a) LASER
(b) SONAR
(c) sonic boom
(d) reverberation
Option b – SONAR
Bats can ascertain the distance, directions, nature, and size of the obstacles at night. This is possible by the reflection of the emitted
(a) ultrasonic waves from the bat
(b) ultrasonic waves from distant objects
(c) supersonic waves from the bat
(d) supersonic waves from the distant objects
Option a – ultrasonic waves from the bat
A person rings a metallic bell near a strong concrete wall. He hears the echo after 0.3 s. if the sound moves with a speed of 340 m/s, how far is the wall from him?
(a) 102m
(b) 11m
(c) 51m
(d) 30m
Option c – 51m
Consider the following statements: 1. Two persons on the surface of the moon cannot talk to each other. 2. Sound waves cannot travel through a vacuum. 3. Speed of sound is greater in the solid medium than in the liquid or gas medium.
(a) 3 alone is correct
(b) 1 and 2 are correct
(c) 1 and 3 are correct
(d) 1,2 and 3 are correct
Option d – 1,2 and 3 are correct
Which one of the following statements is NOT correct?
(a) The velocity of sound in air increases with the increase in temperature.
(b) The velocity of sound in air is independent of pressure.
(c) The velocity of sound in the air decreases as the humidity increases.
(d) The velocity of sound in air is not affected by the change in amplitude and frequency.
Option c – The velocity of sound in the air decreases as the humidity increases
Consider the following statements: 1. A flute of a smaller length produces waves of lower frequency. 2. Sound travels in rocks in the form of longitudinal elastic waves only. Which of the statement(s) given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Option b – 2 only
A big explosion on the moon cannot be heard on earth because
(a) The explosion produces high-frequency sound waves that are inaudible
(b) Sound waves required a material medium for propagation
(c) Sound waves are absorbed in the moon’s atmosphere
(d) Sound waves are absorbed in the earth’s atmosphere
Option b – Sound waves required a material medium for propagation
When a sound wave goes from one medium to another, the quantity that remains unchanged is
(a) frequency
(b) amplitude
(c) wavelength
(d) speed
Option a – frequency
Shock waves are produced by objects
(a) carrying electric charge and vibrating
(b) vibrating with a frequency greater than 20000 Hz
(c) vibrating with a very large amplitude
(d) moving with a speed greater than that of sound in the medium
Option d – moving with a speed greater than that of sound in the medium
Sound waves are not transmitted to long distances because
(a) they are absorbed by the atmosphere
(b) they have a constant frequency
(c) the height of the antenna required should be very high
(d) the velocity of sound waves is very less
Option a – they are absorbed by the atmosphere
Which of the following changes at an antinode in a stationary wave?
(a) Density only
(b) Pressure only
(c) Both pressure and density
(d) Neither pressure nor density
Option d – Neither pressure nor density
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