# NEET Physics: Questions 725 - 729 of 2142

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## Question number: 725

MCQ▾

### Question

An alternating voltage is connected to a 1 µF capacitor through an ac ammeter. The reading of the ammeter will be

### Choices

Choice (4) Response

a.

40 mA

b.

10 mA

c.

20 mA

d.

80 mA

## Question number: 726

MCQ▾

### Question

Three identical metal balls each of radius r are placed touching each other on a horizontal surface such that an equilateral triangle is formed, when centers of three balls are joined. The center of the mass of system is located at

### Choices

Choice (4) Response

a.

Line joining centers of any two balls

b.

Centre of one of the balls

c.

Horizontal surface

d.

Point of intersection of the medians

## Question number: 727

MCQ▾

### Question

The frequency of an alternating voltage is 50 cycles/sec and its amplitude is 120 V. Then the r. m. s value of voltage is

### Choices

Choice (4) Response

a.

56.5V

b.

70.7V

c.

84.8V

d.

101.3V

## Question number: 728

MCQ▾

### Question

Four particles of masses m, 2m, 3m and 4m are arranged at the corners of a parallelogram with each side equal to a and one of the angle between two adjacent sides is 60°. The parallelogram lies in the x-y plane with mass-m at the origin and 4m on the x-axis. The center of mass of the arrangement will be located at

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 729

Assertion-Reason▾

### Assertion (Ꭺ)

An aircraft flies along the meridian, the potential at the ends of its wings will be the same.

### Reason (Ꭱ)

Whenever there is change in the magnetic flux e. m. f. induces.

### Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

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