NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 2087 - 2090 of 2184

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Question number: 2087

» Properties of Solids & Liquids » Application of Surface Tension

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Appeared in Year: 2016

MCQ▾

Question

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

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2088

» Electronic Devices » Junction Transistor

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Appeared in Year: 2016

MCQ▾

Question

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

Choices

Choice (4) Response

a.

b.

c.

20mV

d.

Question number: 2089

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

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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 . It is then bent into a circular coil of turns. The magnetic field at the centre of this coil of turns will be –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2090

» Laws of Motion » Law of Conservation of Linear Momentum

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Appeared in Year: 2016

MCQ▾

Question

Two identical balls A and B having velocities of and respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be –

Choices

Choice (4) Response

a.

and

b.

and

c.

and

d.

and