Wave Optics-Young's Double Slit Experiment (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 5 - 7 of 17

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Question number: 5

» Wave Optics » Young's Double Slit Experiment

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MCQ▾

Question

In Young’s double slit experiment, white light is used. The separation between the slits is b. The screen is at a distance d (d > > b) from the slits. Some wavelengths are missing exactly in front of one slit. One of these wavelengths is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 6

» Wave Optics » Young's Double Slit Experiment

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MCQ▾

Question

In an experiment similar to Young’s experiment, interference is observed using waves associated with electrons. The electrons are being produced in an electron gun. In order to decrease the fringe width,

(1) Electron gun voltage be increased.

(2) The slits be moved away from each other

(3) The screen be moved closer to interfering slits.

(4) Electron gun voltage be decreased.

Select the correct answers and mark it according to the following codes:

Codes:

Choices

Choice (4) Response

a.

1,2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

2 and 4 are correct

Question number: 7

» Wave Optics » Young's Double Slit Experiment

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Assertion-Reason▾

Question

Assertion (Ꭺ)

In Young’s experiment, the fringe width for dark fringes is same as that for white fringes.

Reason (Ꭱ)

In Young’s double slit experiment performed with a source of white light, only black and bright fringes are observed.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false

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