NEET Physics: Questions 2086 - 2088 of 2142

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Question number: 2086

» Properties of Solids & Liquids » Application of Surface Tension

Appeared in Year: 2016

MCQ▾

Question

Three liquids of densities Equation and Equation (with Equation ), having the same value of surface tension T, rise to the same height in three identical capillaries. The angle of contact Equation and Equation obey –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2087

» Electronic Devices » Junction Transistor

Appeared in Year: 2016

MCQ▾

Question

For CE transistor amplifier, the audio signal voltage across the collector resistance of Equation is Equation . If the current amplification factor of the transistor is 100 and the base resistance is Equation , then the input signal voltage is –

Choices

Choice (4) Response

a.

20mV

b.

Equation

c.

Equation

d.

Equation

Question number: 2088

» Magnetic Effects of Current and Magnetism » Ampere's Law

Appeared in Year: 2016

MCQ▾

Question

A long wire carrying a steady current is bent into a circular loop of one turn. The magnetic field at the centre of the loop is Equation . It is then bent into a circular coil of Equation turns. The magnetic field at the centre of this coil of Equation turns will be –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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