# KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics: Questions 91 - 94 of 253

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## Question number: 91

MCQ▾

### Question

A box, when hung from a spring balance shows a reading of 35 kg inside an evacuated chamber. If the same box is hung from the same spring balance outside an evacuated chamber, the reading on the scale will be,

### Choices

Choice (4) Response

a.

35 kg because the effect of the absence of the atmosphere will be identical on the box and the spring balance

b.

35 kg because the mass of the box remains unchanged

c.

Less than 35 kg because the atmospheric buoyancy force will be present

d.

More than 35 kg because the spring constant is lower in air.

## Question number: 92

Appeared in Year: 2014

MCQ▾

### Question

Two identical bar magnets are held perpendicular to each other with a certain separation, as shown below. The area around the magnets is divided into four zones

Given that there is a neutral point it is located in

### Choices

Choice (4) Response

a.

Zone III

b.

Zone II

c.

Zone I

d.

Zone IV

## Question number: 93

MCQ▾

### Question

A girl of 40 kg mass and a boy of 60 kg mass are moving with equal kinetic energies. What is the ratio of their momenta?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 94

Appeared in Year: 2014

MCQ▾

### Question

A box, when hung from a spring balance shows a reading of 50 kg. If the same box is hung from the same spring balance inside an evacuated chamber, the reading on the scale will be.

### Choices

Choice (4) Response

a.

More than 50 kg because the atmospheric buoyancy force will be absent

b.

50 kg because the effect of the absence of the atmosphere will be identical on the box and the spring balance

c.

50 kg because the mass of the box remains unchanged

d.

Less than 50 kg because the weight of the column of air on the box will be absent

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