NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1728 - 1732 of 2320

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Question number: 1728

» Oscillations and Waves » Speed of a Wave

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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 then the ratio of velocities V 1 and V 2 will be,

Choices

Choice (4)Response

a.

4: 1

b.

1: 2

c.

2: 1

d.

1: 4

Question number: 1729

» Oscillations and Waves » Longitudinal and Transverse Waves

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MCQ▾

Question

In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.170 second. The frequency of the wave is,

Choices

Choice (4)Response

a.

0.73 Hz

b.

0.36 Hz

c.

2.94 Hz

d.

1.47Hz

Question number: 1730

» Oscillations and Waves » Simple Pendulum

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MCQ▾

Question

The length of a simple pendulum is increased by 5%. Its time period will

Choices

Choice (4)Response

a.

Increase by 2.5%

b.

Increase by 2%

c.

Increase by 3.5%

d.

Decrease by 5%

Question number: 1731

» Oscillations and Waves » Wave Motion

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MCQ▾

Question

A wave travelling in positive X-direction with A = 0.2m has a velocity of 360 m/sec. If λ = 60m, then correct expression for the wave is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 1732

» Oscillations and Waves » Speed of a Wave

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MCQ▾

Question

A wave represented by the given equation 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.

1 and 3 are correct

b.

1,2 and 3 are correct

c.

1 and 2 are correct

d.

2 and 4 are correct

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