# KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics: Questions 194 - 198 of 253

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## Question number: 194

MCQ▾

### Question

A body moving in a straight line covers a distance of 12 m in the 2th second and 22 m in 5th sec. Distance will it cover in 7th second is –

### Choices

Choice (4) Response

a.

22.21

b.

15.51

c.

17.53

d.

28.66

## Question number: 195

MCQ▾

### Question

An object of height 2.5 cm is placed at a distance of 10 cm in front of a concave lens of power, – 12 diopters. The height of the image is –

### Choices

Choice (4) Response

a.

2.46

b.

1.46

c.

1.13

d.

2.13

## Question number: 196

MCQ▾

### Question

During the melting of a slab of ice at 273 K at atmospheric pressure,

1. Positive work is done by the ice water system on the atmosphere.
2. Positive work is done on the ice water system by the atmosphere.
3. Internal energy of the ice water system increases
4. Internal energy of the ice water system decreases.

### Choices

Choice (4) Response

a.

(1) and (4) are correct

b.

(1), (2) and (3) are correct

c.

(2) and (3) are correct

d.

(1) and (3) are correct

## Question number: 197

MCQ▾

### Question

At the moment t = 0, a particle leaves the origin and moves in positive direction of x – axis. Its velocity varies with time as,

Where v0 is the initial velocity vector whose modulus equals , . The moments of time when the particle is at the distance + 10 cm is –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 198

MCQ▾

### Question

Two starts each of 1 solar mass are approaching each other for a head-on collision. When they are at a distance of 3 ⨯ 107 km, their speeds are negligible. The speed with which they collide is –

(The radius of each star is 105 km, assume the stars to remain undistorted until they collide. . )

### Choices

Choice (4) Response

a.

b.

c.

d.

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