# NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1130 - 1133 of 2142

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 1130

» Properties of Solids & Liquids » Heat Transfer » Convection

MCQ▾

### Question

A wall is made up of two layers A and B. The thickness of the two layers is the same, but materials are different. The thermal conductivity of A is double than that of B. In thermal equilibrium the temperature difference between the two ends is 36°C. Then the difference of temperature at the two surfaces of A will be

### Choices

Choice (4) Response

a.

12°C

b.

24°C

c.

6°C

d.

18°C

## Question number: 1131

MCQ▾

### Question

Consider interference between waves from two sources of intensities are I & 4I. Find intensities at points where the phase difference is .

### Choices

Choice (4) Response

a.

I

b.

4I

c.

3I

d.

5I

## Question number: 1132

MCQ▾

### Question

In the following P-V diagram two adiabatic cut two isothermals at temperatures T 1 and T 2 (figure). The value of will be

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1133

MCQ▾

### Question

The electron in a hydrogen atom makes a transition , where n 1 and n 2 are the principal quantum numbers of two states. Assume the Bohr model to be valid. The time period of the electron in the initial state is eight times that in the final state. Then,

(1) n 1 = 4 (2) n 2 = 2

(3) n 2 = 5 (4) n 1 = 5

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

### Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 2 are correct

c.

2 and 4 are correct

d.

1 and 3 are correct

f Page