NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1753 - 1755 of 2184

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Question number: 1753

» Oscillations and Waves » Simple Pendulum

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MCQ▾

Question

A pendulum suspended from the ceiling of a train has a period T, when the train is at rest. When the train is accelerating with a uniform acceleration a, the period of oscillation will,

Choices

Choice (4) Response

a.

Become infinite

b.

Remain unaffected

c.

Decrease

d.

Increase

Question number: 1754

» Oscillations and Waves » Periodic Functions

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MCQ▾

Question

Which of the following are not corrected to make period of simple pendulum two times:

(a) its length is doubled

(b) the mass of the bob is doubled

(C) the mass of the bob and the length of the pendulum are doubled

(d) its length is made four times

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

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1,2 and 3 are correct

d.

1 and 3 are correct

Question number: 1755

» Oscillations and Waves » Resonance

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MCQ▾

Question

A particle with restoring force proportional to displacement and resisting force proportional to velocity is subjected to a force F sin ωt. If the amplitude of the particle is maximum for ω = ω 1 and the energy of the particle is maximum for ω = ω 2, then (where ω 0 natural frequency of oscillation of particle)

Choices

Choice (4) Response

a.

b.

c.

d.