NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1759 - 1762 of 2142

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Question number: 1759

» Oscillations and Waves » Simple Pendulum

MCQ▾

Question

Identify wrong statements among the following,

(1) The greater the mass of a pendulum bob, the shorter is its frequency of oscillation

(2) A simple pendulum with a bob of mass m swings with an angular amplitude of 40°. When its angular amplitude is 20°, the tension in the string is less than mg cos 20 0.

(3) As the length of a simple pendulum is increased, the maximum velocity of its bob during its oscillation will also increase.

(4) The fractional change in the time period of a pendulum on changing the temperature is independent of the length of the pendulum.

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

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 2 are correct

c.

1, 2 and 3 are correct

d.

1 and 3 are correct

Question number: 1760

» Oscillations and Waves » Wave Motion

MCQ▾

Question

A tuning fork makes 125 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.

2.56 m

b.

2.29 m

c.

1.89 m

d.

2.64 m

Question number: 1761

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

MCQ▾

Question

A spring of force constant k is cut into two pieces such that one piece is double the length of the other. Then the short piece will have a force constant of

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 1762

» Oscillations and Waves » Displacement Relation for a Progressive Wave

MCQ▾

Question

The equation of a wave is given as Equation .

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

None of the above

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