# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 731 - 736 of 2142

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## Passage

Read the passage given below and answer the questions that follows:

In the figure shown, the rod has a resistance R, the horizontal rails have negligible friction. Magnetic field of intensity B is directed perpendicular into the plane of paper. A cell of e. m. f. E and negligible internal resistance is connected between points a and b. The rod is initially at rest.

## Question number: 731 (1 of 3 Based on Passage) Show Passage

MCQ▾

### Question

After some time the rod will approach a terminal speed. The speed is,

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 732 (2 of 3 Based on Passage) Show Passage

MCQ▾

### Question

The current when the rod attains its terminal speed is

### Choices

Choice (4) Response

a.

b.

Zero

c.

d.

## Question number: 733 (3 of 3 Based on Passage) Show Passage

MCQ▾

### Question

The velocity of the rod as a function of time t (where ) is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 734

MCQ▾

### Question

A force produces acceleration 1, ½, 1/3, ¼… (All in m/s2), applied separetly to n bodies. If these bodies are combined to form single one, then the acceleration of the system will be, if same force is taken into account.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 735

MCQ▾

### Question

Two bodies of masses 2 kg and 4 kg are moving with velocities 5 m/s and 8 m/s respectively along same direction. Then the velocity of their center of mass will be

### Choices

Choice (4) Response

a.

5.25 m/s

b.

8.1 m/s

c.

7.3 m/s

d.

6.4 m/s

## Question number: 736

MCQ▾

### Question

In an L - R circuit, the value of L is henry and the value of R is 30 ohm. If in the circuit, an alternating e. m. f. of 200 volt at 50 cycles per sec is connected, the impedance of the circuit and current will be

### Choices

Choice (4) Response

a.

40.4 Ω, 5A

b.

30.7 Ω, 6.5A

c.

11.4Ω, 17.5A

d.

50 Ω, 4A

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