# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1225 - 1228 of 2320

Access detailed explanations (illustrated with images and videos) to 2320 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time! View Sample Explanation or View Features.

Rs. 600.00 or

How to register?

## Question number: 1225

Edit
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: 1226

Edit
MCQ▾

### Question

A lead bullet at 25°C just n tits when stopped by an obstacle. Assuming that 25 % of heat is absorbed by the obstacle, then the velocity of the bullet at the time of striking (M. P. of lead = 320°C, specific heat of lead = 0.02 cal/gm°C, latent heat of fusion of lead = 6 cal/gm and J = 4.2 joule/cal)

### Choices

Choice (4)Response

a.

307.5 m/sec

b.

4.010 m/sec

c.

0.365 m/sec

d.

Question does not provide sufficient data or is vague

## Question number: 1227

Edit
MCQ▾

### Question

In an interference pattern, at a point we observe the 16 th order maximum for λ 1 = 6000A. What order will be visible here if the source is replaced by light of wavelength? λ 2 = 4800 Å

### Choices

Choice (4)Response

a.

10

b.

20

c.

40

d.

80

## Question number: 1228

Edit
MCQ▾

### Question

Two Polaroids are oriented with their planes perpendicular to incident light and transmission axis making an angle of 30 0 with each other. What fraction of incident unpolarised light is transmitted?

### Choices

Choice (4)Response

a.

17.5 %

b.

27.5 %

c.

37.5 %

d.

57.5 %

Developed by: