Oscillations and Waves-Speed of a Wave (NEET Physics): Questions 1 - 3 of 9

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Question number: 1

» Oscillations and Waves » Speed of a Wave

MCQ▾

Question

V 1 and V 2 are the velocities of sound at the same temperature in two monoatomic gases of densities ρ 1 and ρ 2 respectively. If ρ1ρ2=14 then the ratio of velocities V 1 and V 2 will be,

Choices

Choice (4) Response

a.

2: 1

b.

1: 4

c.

1: 2

d.

4: 1

Question number: 2

» Oscillations and Waves » Speed of a Wave

MCQ▾

Question

A wave represented by the given equation Y=Asin(10πx+15πt+π3) where x is in meter and t is in second. The expression represents,

(1) A wave travelling in the negative X direction with a velocity of 1.5 m/sec

(2) A wave travelling in the negative X direction with a wavelength of 0.2 m

(3) A wave travelling in the positive X direction with a velocity of 1.5 m/sec.

(4) A wave travelling in the positive X direction with a wavelength of 0.2 m

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Question number: 3

» Oscillations and Waves » Speed of a Wave

MCQ▾

Question

A transverse wave is represented by the equation y=y0sin2πλ(vtx) , Here v = wave velocity. For what value of x, the maximum particle velocity equal to two times the wave velocity

Choices

Choice (4) Response

a.

λ=πy02

b.

λ=πy03

c.

λ=πy0

d.

λ=2πy0

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