NEET Physics: Questions 1718 - 1721 of 2098

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Question number: 1718

» Oscillations and Waves » Simple Harmonic Motion » Force, Velocity, and Acceleration

Assertion-Reason▾

Assertion (Ꭺ)

Consider motion for a mass spring system under gravity, motion of M is not a simple harmonic motion unless Mg is negligibly small.

Reason (Ꭱ)

For simple harmonic motion acceleration must be proportional to displacement and is directed towards the mean position.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is true but Ꭱ is false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are false

Question number: 1719

» Oscillations and Waves » Wave Motion

MCQ▾

Question

A tuning fork makes 256 vibrations per second in air. When the velocity of sound is 330 m/s then wavelength of the tone emitted is

Choices

Choice (4) Response

a.

0.89 m

b.

1.11 m

c.

0.56 m

d.

1.29 m

Question number: 1720

» Oscillations and Waves » Simple Harmonic Motion » Oscillations of a Spring

MCQ▾

Question

A ball of the mass 10 kg hangs from a spring and oscillates with time period of 2 π seconds. If the ball is removed the spring shortens by,

Choices

Choice (4) Response

a.

2πmeters

b.

gmeters

c.

gkmeters

d.

kgmeters

Question number: 1721

» Oscillations and Waves » Simple Harmonic Motion » Phase

MCQ▾

Question

The path difference between the two waves y1=a1sin(ωt2πxλ) and y2=a2sin(ωt2πxλ+ϕ) is

Choices

Choice (4) Response

a.

λ2π(ϕ+π2)

b.

2πλϕ

c.

λ2πϕ

d.

2πλ(ϕπ2)

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