Oscillations and Waves (AIIMS Physics): Questions 44 - 49 of 50

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Question number: 44

» Oscillations and Waves » Longitudinal and Transverse Waves

MCQ▾

Question

Find the magnitude of pressure amplitude in a sound of intensity 3×106Wm2 . Density of air at STP ρ=1.22kgm3,v=332ms .

Choices

Choice (4) Response

a.

4.2×102m

b.

6.3×102m

c.

5×102m

d.

7×102m

Question number: 45

» Oscillations and Waves » Displacement as a Function of Time

MCQ▾

Question

A particle executes simple harmonic motion with an angular velocity of 2.2rads and maximum acceleration 6.8ms2 . Amplitude of the oscillation is –

Choices

Choice (4) Response

a.

1.0 m

b.

2.0 m

c.

1.4 m

d.

0.94m

Question number: 46

» 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 four, then tension in the string must be made –

Choices

Choice (4) Response

a.

Eight times

b.

Sixteen times

c.

Four times

d.

Ten times

Question number: 47

» Oscillations and Waves » Simple Harmonic Motion » Energy

MCQ▾

Question

In simplest terms, the energy of a wave is directly proportional to the square of its –

Choices

Choice (4) Response

a.

Refraction

b.

Length

c.

Reflection

d.

Height

Question number: 48

» Oscillations and Waves » Displacement as a Function of Time

MCQ▾

Question

A particle executes simple harmonic motion with an angular velocity and maximum acceleration of 2.5rads . and 5ms2 respectively. Amplitude of the oscillation is –

Choices

Choice (4) Response

a.

1.0m

b.

0.9 m

c.

0.8 m

d.

0.5 m

Question number: 49

» Oscillations and Waves » Speed of a Wave

MCQ▾

Question

The velocities of sound at the same pressure in two monatomic gases of densities ρ1 and ρ2 are V1 and V2 respectively. If V1V2=5 , then the value of ρ1ρ2

Choices

Choice (4) Response

a.

5

b.

125

c.

25

d.

15

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