Oscillations and Waves (AIIMS (All India Institute of Medical Sciences) Physics): Questions 43 - 47 of 50

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Question number: 43

» Oscillations and Waves » Wave Motion

Appeared in Year: 1998

Assertion-Reason▾

Assertion (Ꭺ)

Sound waves cannot propagate through vacuum but light waves can.

Reason (Ꭱ)

Sound waves cannot be polarized but light waves can be.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

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

c.

Ꭺ is false but Ꭱ is true

d.

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

Question number: 44

» Oscillations and Waves » Longitudinal and Transverse Waves

MCQ▾

Question

Find the magnitude of pressure amplitude in a sound of intensityEquation . Density of air at STP Equation .

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 45

» Oscillations and Waves » Displacement as a Function of Time

MCQ▾

Question

A particle executes simple harmonic motion with an angular velocity ofEquation and maximum acceleration Equation . 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

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