MEDIUM
11th West Bengal Board
IMPORTANT
Earn 100

Prove that the Doppler effect is greater when the source approaches the observer than when the observer approaches the source with the same speed ?

Important Questions on Waves

HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 22 - Waves>EXERCISE>Q 18

Show that if the source moves away with the velocity of sound from an observer, who is at rest, the frequency of vibration is halved.

MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 22 - Waves>EXERCISE>Q 19
Distinguish between noise and musical sound. What are the characteristics of a musical sound ? What enables a trained ear to distinguish between the musical sound emitted by a sitar, violin and piano at the same time ?
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 22 - Waves>EXERCISE>Q 20

A whistle is revolving with a constant speed in a horizontal circle. What changes in the frequency of the whistle will appear to a person (i) standing outside the circle ?

MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 22 - Waves>EXERCISE>Q 20

A whistle is revolving with a constant speed in a horizontal circle. What changes in the frequency of the whistle will appear to a person (ii) standing at the centre of the circle.

MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 22 - Waves>EXERCISE>Q 21
Two musical sounds differ from each other in respect of loudness, pitch and quality-what does this statement mean ? What are the factors upon which these characteristics depend ?
MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 22 - Waves>EXERCISE>Q 22

How is a stationary wave produced ? What are their characteristics ? Explain graphically how a stationary wave is generated.

MEDIUM
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 22 - Waves>EXERCISE>Q 23
Give one example each for longitudinal stationary wave and transverse stationary wave. Explain, with diagram, what you mean by nodes and anti nodes.
HARD
11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 22 - Waves>EXERCISE>Q 24
Prove analytically that the distances between two consecutive nodes and antinodes in a stationary wave are equal and each is equal to half the wavelength of the wave.