# KVPY (Kishore Vaigyanik Protsahan Yojana) Stream-SA (Class 11) Physics: Questions 208 - 212 of 253

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## Question number: 208

» Properties of Solids & Liquids » Heat Transfer » Convection

MCQ▾

### Question

315 g of ice is mixed with 155 g of water at temperature 650C. The latent heat of ice is 80 cal/g and the specific heat of water is 1 cal/g-0C. Assuming no heat loss to the environment, the amount of ice which does not melt is:

### Choices

Choice (4) Response

a.

0

b.

99.35 g

c.

115 g

d.

189 g

## Question number: 209

MCQ▾

### Question

A tuning fork vibrating at 240 Hz produces a sound wave which travels in air at a speed 475 ms-1. The distance travelled by sound during the time the fork makes 65 vibrations is,

### Choices

Choice (4) Response

a.

137.75 m

b.

128.63 m

c.

131 m

d.

120.85 m

## Question number: 210

MCQ▾

### Question

Calculate volume of the water flowing in 14 minutes through a horizontal tube of 0.2 cm diameter, 75 cm long. The pressure head across the ends of the tube is 32 cm of water column. Coefficient of viscosity of water is 9 ⨯ 10-4 S. I unit g = 10 m/s2.

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 211

MCQ▾

### Question

A person P of mass 72 kg walks up a stair case in 36 sec. Another person Q of mass 54 Kg walks up the same staircase in 6 sec. The ratio of the power generated by P to that by Q is,

### Choices

Choice (4) Response

a.

2

b.

c.

d.

## Question number: 212

MCQ▾

### Question

A particle is executing linear simple harmonic motion of amplitude A. At what displacement is the energy half kinetic and half potential.

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page