AIIMS (All India Institute of Medical Sciences) Physics: Questions 394 - 399 of 500

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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

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 Equation is along the plane of the coil. The magnetic field of coil:

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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

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

Question number: 398

» Electrostatics » Capacitors

MCQ▾

Question

What is the area of the plate of a 2F parallel plate capacitor, if the separation between the plates is 3 mm?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 399

» Properties of Solids & Liquids » Viscosity

MCQ▾

Question

The rate of flow of a liquid through a capillary tube of radius Equation is V when the pressure difference across the two ends of the capillary is P. If pressure is increased by 6P and radius is reduced to Equation then the rate of flow becomes,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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