Oscillations and Waves-Speed of a Wave (AIIMS (All India Institute of Medical Sciences) Physics): Questions 1 - 5 of 7

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Question number: 1

» 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: 2

» 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: 3

» Oscillations and Waves » Speed of a Wave

Appeared in Year: 2002

MCQ▾

Question

The velocities of sound at the same pressure in two monatomic gases of densities Equation and Equation are Equation and Equation respectively. If Equation , then the value of Equation is?

Choices

Choice (4) Response

a.

2

b.

Equation

c.

4

d.

Equation

Question number: 4

» Oscillations and Waves » Speed of a Wave

MCQ▾

Question

The tension in a piano wire is 20N. What should be the tension in the wire to produce a note of three times of the frequency?

Choices

Choice (4) Response

a.

110N

b.

120N

c.

180N

d.

140N

Question number: 5

» Oscillations and Waves » Speed of a Wave

Appeared in Year: 2002

Assertion-Reason▾

Assertion (Ꭺ)

The flash of lighting is seen before the sound of thunder is heard.

Reason (Ꭱ)

Speed of sound is greater than speed of light.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

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