BITSAT Physics: Questions 90 - 94 of 382

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Question number: 90

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

MCQ▾

Question

In a transformer, the number of turns of primary coil and secondary coil are Equation and Equation , respectively. If Equation is applied on the primary coil, then the ration of current in primary and secondary coil is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 91

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

Question

If luminous-efficiency of a lamp is Equation and its luminous-intensity is 42 candela then, power of the lamp is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 92

» Magnetic Effects of Current and Magnetism » Moving Coil Galvanometer

MCQ▾

Question

We have a galvanometer of resistance Equation wire. It is shunted by a Equation wire. The part of total current that flow through the galvanometer is given as –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 93

» Properties of Solids & Liquids » Specific Heat Capacity

MCQ▾

Question

The specific heat of a gas in an isothermal process is

Choices

Choice (4) Response

a.

Negative

b.

Zero

c.

Infinite

d.

Remains constant

Question number: 94

» Gravitation » Gravitational Acceleration

MCQ▾

Question

The mass of moon is Equation if the acceleration due to gravity on the moon is Equation the radius of the moon is –

Equation

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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