Loading exam questions

A focused practice platform for competitive-exam MCQs, subject wise, topic wise practice, and current affairs revision.

Exams

SSC CGL
UPSC CSE PRELIMS
IBPS PO
RRB NTPC
CDS

Subjects

Mathematics
Physics
General Knowledge
English
Reasoning

Resources

Current Affairs
Search MCQs
Practice Sets

Company

About Us
Contact
Privacy Policy
Terms of Use
Disclaimer
Copyright

Practice library for exams, subjects, and daily revision. For learning purposes only.

© 2026 ObjectiveMcq.ComAll rights reserved

waves in Physics - SSC CGL 2021 Questions & Answers (English) - ObjectiveMcq

SSC CGL 2021

Browse

Subjects

Biology1 Chemistry1 Physics1

Topics

Waves
- Sound

ExamSSC CGL2021Physicswaves

SSC CGL 2021, Physics, waves - Questions and Answers

Browse the questions, answers and explanations for waves in Physics, SSC CGL 2021.

1 questions · Page 1 of 1

SSC CGL 2021 PhysicsWaves

1.

What is the approximate speed of sound in air at 0°C?

A

232 m/s

B

331 m/s

C

440 m/s

D

3 × 10⁸ m/s

Correct Answer:

B — 331 m/s

Explanation:

The speed of sound in air at 0°C is approximately 331 m/s. It increases with temperature.

Previously Asked Questions