The frequency of a sound wave is 500 Hz and wavelength 0.68 m. Speed is MCQ with Answer and Explanation

Question

Share Report Error

The frequency of a sound wave is 500 Hz and wavelength 0.68 m. Speed is

A. 170 m/s

B. 680 m/s

C. 340 m/s

D. 34 m/s

Answer: Option C

Solution (By JKSSB Mock Tests)

v = f λ = 500 × 0.68 = 340 m/s, typical speed of sound in air.

This question belongs to: Science Physics

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Physics Questions

Question #1

Action and reaction forces, as described by Newton's third law of motion:

A. Have different magnitudes but opposite directions

B. Act on different bodies

C. Act on the same body

D. Cancel each other completely, producing zero net force

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option B

Explanation:
Newton's third law states that to every action, there is an equal and opposite reaction. Crucially, action and reaction forces always act on two different bodies. Because they act on different bodies, they do not cancel each other out, and each body experiences a net force based on the reaction it receives.

This question belongs to: Science Physics

Question #2

The frequency of infrasound is

A. Above 20 kHz

B. Below 10 Hz

C. 20 Hz - 20 kHz

D. Below 20 Hz

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
Infrasound < 20 Hz, ultrasound > 20 kHz.

This question belongs to: Science Physics

Question #3

An element X has atomic number 17 and mass number 35. Number of neutrons is

A. 52

B. 17

C. 35

D. 18

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
Neutrons = 35 - 17 = 18 (Chlorine).

This question belongs to: Science Physics

Explore All Physics MCQs