Oscillations and Waves (AIIMS Physics): Questions 34 - 37 of 50

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Question number: 34

» Oscillations and Waves » Harmonics

MCQ▾

Question

Two sounds in a gas differ in their loudness level by 40 db. What is the ratio of the amplitude of the pressure oscillations?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation Equation

d.

Equation

Question number: 35

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

MCQ▾

Question

If vibrations of a string are to be increased to a factor of six, then tension in the string must be made –

Choices

Choice (4) Response

a.

3 times

b.

9 times

c.

36 times

d.

6 times

Question number: 36

» Oscillations and Waves » Periodic Functions

MCQ▾

Question

In an experiment, on the measurement of Equation , by a simple pendulum, the time period was measured with an accuracy of 0.1 % and the length was measured with an accuracy of Equation . The resultant value of Equation obtained with accuracy Equation . Than find the value of Equation .

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 37

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

A vehicle, with a horn of frequency Equation is moving with a velocity of Equation in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency Equation . Then – (Take velocity of sound in air 300 m/s)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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