# 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.

b.

c.

d.

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

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 37

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

b.

c.

d.

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