NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 2208 - 2212 of 2320

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Question number: 2208

» Wave Optics » Interference

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MCQ▾

Question

Consider sunlight incident on a pinhole of width . The image of the pinhole seen on a screen shall be

Choices

Choice (4)Response

a.

Different from a geometrical image.

b.

A sharp white ring.

c.

Diffused coloured region around a sharp central white spot

d.

Both c. and a. are correct

Question number: 2209

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

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Question

There are two coils and as shown in Fig. A current starts flowing in as shown, when is moved towards and stops when stops moving. The current in is counterclockwise. is kept stationary when moves. We can infer that

Two coils A and B

Two Coils a and B

Two coils A and B

Choices

Choice (4)Response

a.

There is a constant current in the clockwise direction in .

b.

There is a constant current in the counterclockwise direction in .

c.

There is no current in

d.

There is a varying current in .

Question number: 2210

» Electromagnetic Induction & Alternating Currents » Electromagnetic Induction

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Question

An e. m. f is produced in a coil, which is not connected to an external voltage source. This can be due to

Choices

Choice (4)Response

a.

The coil moving in a time varying magnetic field.

b.

The coil moving in a constant magnetic field.

c.

The coil being in a time varying magnetic field.

d.

All c. , a. and b. are correct

Question number: 2211

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

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Question

A plane electromagnetic wave propagating along direction can have the following pairs of .

Choices

Choice (4)Response

a.

b.

c.

d.

Both b. and c. are correct

Question number: 2212

» Wave Optics » Interference

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MCQ▾

Question

In a Young’s double slit experiment, the source is white light. One of the holes is covered by a red filter and another by a blue filter. In this case

Choices

Choice (4)Response

a.

There shall be alternate interference patterns of red and blue.

b.

There shall be no interference fringes.

c.

There shall be an interference pattern for red mixing with one for blue.

d.

There shall be an interference pattern for red distinct from that for blue.

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