[4 Mark Questions]

Questions

🎯

8 questions · timed · auto-graded

Question 14 Marks

Explain how does SONAR work?

Question 24 Marks

List the applications of sound.

Question 34 Marks

Verify experimentally the laws reflection of sound.

Question 44 Marks

Describe with diagram, how compressions and rarefactions are produced.

Question 54 Marks

Explain the working of human ear with diagram.

Question 64 Marks

What is an echo? Write the conditions to hear an echo.

Question 74 Marks

Distinguish between Loudness and Intensity of the Sound?

Question 84 Marks

Prove that sound needs a material medium for its propagation.

[4 Mark Questions] - Science STD 9 Questions - Vidyadip

Science [4 Mark Questions]