NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 421 - 425 of 2142

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Question number: 421

» Electrostatics » Equipotential Surfaces

MCQ▾

Question

A uniform electric field pointing in positive x - direction exists in a region. Let A be the origin, B be the point on the x - axis at x =+1 cm and C be the point on the y - axis at y =+1 cm. Then the potentials at the points A, B and C satisfy

Choices

Choice (4) Response

a.

V A < V B

b.

V A > V C

c.

V A < V C

d.

V A > V B

Question number: 422

» Properties of Solids & Liquids » Specific Heat Capacity

MCQ▾

Question

The specific heat of a solid is determined by the method known as?

Choices

Choice (4) Response

a.

The method of mixture

b.

The method of fusion

c.

The method of vaporization

d.

The method of cooling

Question number: 423

» Electrostatics » Electric Charges

Assertion-Reason▾

Assertion (Ꭺ)

Electrons move away from a low potential to high potential region.

Reason (Ꭱ)

because electrons have negative charge

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 424

» Electrostatics » Capacitors

MCQ▾

Question

Two capacitors of capacitances 3µF and 6µFare charged to a potential of 12V each. They are now connected to each other, with the positive plate of each joined to the negative plate of the other. The potential difference across each will be

Choices

Choice (4) Response

a.

6 volt

b.

zero

c.

4 volt

d.

3 volt

Question number: 425

» Electrostatics » Torque on a Dipole in a Uniform Electric Field.

MCQ▾

Question

Electric charges q, q, -2q are placed at the corners of an equilateral triangle ABC of side l. The magnitude of electric dipole moment of the system is

Choices

Choice (4) Response

a.

b.

2ql

c.

4q l

d.

ql

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