AIIMS (All India Institute of Medical Sciences) Physics: Questions 392 - 397 of 500

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Question number: 392

» Oscillations and Waves » Displacement as a Function of Time

MCQ▾

Question

A particle executes simple harmonic motion with an angular velocity of and maximum acceleration . Amplitude of the oscillation is –

Choices

Choice (4) Response

a.

1.0 m

b.

2.0 m

c.

1.4 m

d.

0.94m

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Question number: 393

» Rotational Motion » Concepts of Rotational Motion

MCQ▾

Question

A stone of mass 5 kg is attached to a string long and is whirled in a horizontal circle. The maximum tension the string can withstand is 20 N. What maximum velocity can be given to the stone without breaking the string?

Choices

Choice (4) Response

a.

b.

c.

d.

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Question number: 394

» Thermodynamics » Carnot Engine and Its Efficiency

MCQ▾

Question

If the system takes 150 Cal. heat, and releases 60 cal. to sink, if source temperature is 115°C find the sink temp –

Choices

Choice (4) Response

a.

120 °C

b.

37.4°C

c.

54°C

d.

127°C

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Question number: 395

» Magnetic Effects of Current and Magnetism » Earth's Magnetic Field

MCQ▾

Question

The magnetic needle of a tangent galvanometer is deflected at an angle 60°. The horizontal component of earth’s magnetic field is along the plane of the coil. The magnetic field of coil:

Choices

Choice (4) Response

a.

b.

c.

d.

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Question number: 396

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

MCQ▾

Question

If vibrations of a string are to be increased to a factor of four, then tension in the string must be made –

Choices

Choice (4) Response

a.

Eight times

b.

Sixteen times

c.

Four times

d.

Ten times

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Question number: 397

» Oscillations and Waves » Simple Harmonic Motion » Energy

MCQ▾

Question

In simplest terms, the energy of a wave is directly proportional to the square of its –

Choices

Choice (4) Response

a.

Refraction

b.

Length

c.

Reflection

d.

Height

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