Oscillations and Waves (AIIMS Physics): Questions 5 - 9 of 50

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Question number: 5

» Oscillations and Waves » Speed of a Wave

Appeared in Year: 2002

MCQ▾

Question

A string in a musical instrument is 50 cm long and its fundamental frequency is 800 Hz. If a frequency of 1000 Hz is to be produced, then required length of string is –

Choices

Choice (4) Response
a.

20 cm/s

b.

200 cm/s

c.

100 cm/s

d.

50 cm/s

Question number: 6

» Oscillations and Waves » Speed of a Wave

Appeared in Year: 2001

MCQ▾

Question

The tension in a piano wire is 10N. What should be the tension in the wire to produce a note of double the frequency?

Choices

Choice (4) Response
a.

20N

b.

40N

c.

80N

d.

10N

Question number: 7

» Oscillations and Waves » Doppler Effect in Sound

Appeared in Year: 2002

MCQ▾

Question

A siren emitting sound of frequency 800 Hz is going away from a static listener with a speed of 30ms . Frequency of sound to be heard by the listener is (Velocity of sound =330ms )

Choices

Choice (4) Response
a.

644.8 Hz

b.

733.3 Hz

c.

481.2 Hz

d.

286.5 Hz

Question number: 8

» Oscillations and Waves » Simple Harmonic Motion » Energy

Appeared in Year: 2001

MCQ▾

Question

A sings with a frequency (n) and B sings with a frequency 18 that of A. If the energy remains the same and the amplitude of A is a, then amplitude of B will be –

Choices

Choice (4) Response
a.

4a

b.

a

c.

8a

d.

2a

Question number: 9

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

Appeared in Year: 2000

MCQ▾

Question

A standing wave having 3 nodes and 2 antinodes is formed between 1.21 distances then the wavelength is

[AIPMT-98, AIIMS]

Choices

Choice (4) Response
a.

2.42

b.

4.84

c.

0.605

d.

1.21

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