NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 2158 - 2161 of 2320

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Question number: 2158

» Physics and Measurement » Technology and Society

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MCQ▾

Question

Two charged particles traverse identical helical paths in a completely opposite sense in a uniform magnetic field

Choices

Choice (4)Response

a.

They have equal components of momenta.

b.

They must have equal charges.

c.

The charge to mass ratio satisfy:

d.

They necessarily represent a particle-antiparticle pair.

Question number: 2159

» Electrostatics » Electric Field

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MCQ▾

Question

A point positive charge is brought near an isolated conducting sphere (Fig. ). The electric field is best given by

Image of The The electric field

Image of the the Electric Field

Image of The The electric field

Choices

Choice (4)Response

a.

Fig (ii)

b.

Fig (iv)

c.

Fig (i)

d.

Fig (iii)

Question number: 2160

» Electrostatics » Electric Flux

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MCQ▾

Question

If over a surface, then

Choices

Choice (4)Response

a.

All charges must necessarily be outside the surface.

b.

The electric field inside the surface and on it is zero.

c.

The number of flux lines entering the surface must be equal to the number of flux lines leaving it.

d.

Both a. and c. are correct

Question number: 2161

» Electrostatics » Equipotential Surfaces

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MCQ▾

Question

Figure shows some equipotential lines distributed in space. A charged object is moved from point A to point B.

Image of The A charged object is moved from point A to point B

Image of the a Charged Object is Moved from Point a to Point B

Image of The A charged object is moved from point A to point B

Choices

Choice (4)Response

a.

The work done in Fig. (ii) is least.

b.

The work done is the same in Fig. (i), Fig. (ii) and Fig. (iii).

c.

The work done in Fig. (iii) is greater than Fig. (ii) but equal to that in Fig. (i).

d.

The work done in Fig. (i) is the greatest.

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