NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1764 - 1768 of 2184

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Question number: 1764

» Oscillations and Waves » Displacement Relation for a Progressive Wave

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MCQ▾

Question

The equation of a wave is given as .

Where x is in meter and t in sec, then the correct statement is,

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

Question number: 1765

» Oscillations and Waves » Simple Pendulum

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MCQ▾

Question

The length of a simple pendulum is increased by 1%. Its time period will

Choices

Choice (4) Response

a.

Increase by 1%

b.

Increase by 0.5%

c.

Decrease by 0.5%

d.

Increase by 2%

Question number: 1766

» Oscillations and Waves » Simple Pendulum

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MCQ▾

Question

A simple pendulum consisting of a ball of mass m tied to a thread of length l is made to swing on a circular arc of angle θ in a vertical plane. At the end of this arc, another ball of mass m is placed at rest. The momentum transferred to this ball at rest by the swinging ball is

Choices

Choice (4) Response

a.

b.

1

c.

Zero

d.

Question number: 1767

» Oscillations and Waves » Speed of a Wave

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Sound travels faster during a clear sunny day than during a clear night.

Reason (Ꭱ)

The velocity of sound is directly proportional to the square of temperature of the medium.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 1768

» Oscillations and Waves » Simple Harmonic Motion » Energy

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MCQ▾

Question

A loaded vertical spring executes simple harmonic oscillation with period of 4 s. The difference between the kinetic energy and potential energy of this system oscillates with a period of:

Choices

Choice (4) Response

a.

2 s

b.

8 s

c.

4 s.

d.

1 s