TN Online TestSamacheer Kalvi practice

Acoustics Book Back One Mark Online Test (10th Standard Science)

Pick how many questions you want and set a time limit, then start. You'll get your score at the end with the correct answer and an explanation for every question. Free, in Tamil and English — 7 questions available.

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When a sound wave travels through air, the air particles

A.vibrate along the direction of the wave motion B.vibrate but not in any fixed direction C.vibrate perpendicular to the direction of the wave motion D.do not vibrate

Velocity of sound in a gaseous medium is 330 ms–1. If the pressure is increased by 4 times without causing a change in the temperature, the velocity of sound in the gas is

A.330 ms–1 B.660 ms–1 C.156 ms–1 D.990 ms–1

The frequency, which is audible to the human ear is

A.50 kHz B.20 kHz C.15000 kHz D.10000 kHz

The velocity of sound in air at a particular temperature is 330 ms–1. What will be its value when temperature is doubled and the pressure is halved?

A.330 ms–1 B.165 ms–1 C.330 × √2 ms–1 D.320 / √2 ms–1

If a sound wave travels with a frequency of 1.25 × 10⁴ Hz at 344 ms–1, the wavelength will be

A.27.52 m B.275.2 m C.0.02752 m D.2.752 m

The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?

A.speed B.frequency C.wavelength D.none of these

Velocity of sound in the atmosphere of a planet is 500 ms–1. The minimum distance between the sources of sound and the obstacle to hear the echo, should be

A.17 m B.20 m C.25 m D.50 m

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Book Back Questions7 textbook MCQs · solved Additional MCQs15 extra MCQs · solved Practice TestInteractive · instant score Additional MCQ TestTest yourself on the extra set Study NotesConcepts & methods Formula SheetAll key formulas

About this Acoustics test

This free online practice test covers Acoustics from the 10th Standard Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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