# Wave Optics-Young's Double Slit Experiment (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 8 - 11 of 17

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## Question number: 8

» Wave Optics » Young's Double Slit Experiment

MCQ▾

### Question

In Young’s double slit experiment 10th order maximum is obtained at the point of observation in the interference pattern for λ = 7000 Å. If the source is replaced by another one of wavelength 5000 Å then the order of maximum at the same point will be-

### Choices

Choice (4) Response

a.

16th

b.

12th

c.

14th

d.

18th

## Question number: 9

» Wave Optics » Young's Double Slit Experiment

MCQ▾

### Question

In Young’s experiment the wavelength of red light is 7.5 × 10 -5 cm. and that of blue light 5.0 × 10 -5 cm. The value of n for which (n + l) th blue bright band coincides with n th red bright band is-

### Choices

Choice (4) Response

a.

8

b.

4

c.

1

d.

2

## Question number: 10

» Wave Optics » Young's Double Slit Experiment

MCQ▾

### Question

In Young’s double slit experiment, carried out with light of wavelength λ = 5000 Å, the distance between the slits is 0.2 mm and the screen is at 200 cm from the slits, The central maximum is at x = 0. The third maximum will be at

### Choices

Choice (4) Response

a.

1.5 cm

b.

5.0 cm

c.

1.67 cm

d.

0.5 cm

## Question number: 11

» Wave Optics » Young's Double Slit Experiment

MCQ▾

### Question

The Young’s double slit experiment, the ratio of intensities of bright and dark fringes is 9. This means that

(1) The intensities of individual sources are 5 and 4 units respectively

(2) The intensities of individual sources are 4 and 1 units respectively

(3) The ratio of the their amplitudes is 3

(4) The ratio of their amplitude is 2

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

Codes:

### Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 3 are correct

d.

1 and 2 are correct

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