# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 764 - 771 of 2320

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## Passage

In Figure given, there is a conducting loop ABCDEFA, of resistance per unit length placed near a long straight current-carrying wire. The dimensions are shown in the figure. The long wire lies in the plane of the loop. The current in the long wire varies as I = I 0 t.

## Question number: 764 (2 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

The e. m. f. induced in the closed loop is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 765 (3 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

The mutual inductance of the pair is

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 766

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MCQ▾

### Question

A step-down transformer is used on a 1000 V line to deliver 20 A at 120 V at the secondary coil. If the efficiency of the transformer is 80%, the current drawn from the line is:

### Choices

Choice (4)Response

a.

3 A

b.

2.4 A

c.

0.3 A

d.

30 A

## Question number: 767

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MCQ▾

### Question

A 4 kg body and a 3 kg body are moving along the x-axis. At a particular instant the 2 kg body has a velocity of 3 ms -1 and the 3 kg body has the velocity of 2ms -1. The velocity of the center of mass at that instant is

### Choices

Choice (4)Response

a.

2.57

b.

1 ms -1

c.

5 ms -1

d.

None of the above

## Passage

If the voltage in an a c circuit is represented by the eq. , , then

## Question number: 768 (1 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

Frequency of ac is

### Choices

Choice (4)Response

a.

75 Hz

b.

c.

d.

50 Hz

## Question number: 769 (2 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

RMS value of the voltage is

### Choices

Choice (4)Response

a.

b.

c.

220 V

d.

314 V

## Question number: 770 (3 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

Average voltage is

### Choices

Choice (4)Response

a.

b.

c.

220 V

d.

## Question number: 771

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MCQ▾

### Question

A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. If a force P is applied at the free end of the rope, the force exerted by the rope on the block will be

### Choices

Choice (4)Response

a.

P

b.

c.

d.

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