Properties of Solids & Liquids (NEET Physics): Questions 39 - 44 of 190

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Passage

A brass ball of mass 100 gm is heated to 100°C and then dropped into 200 gm of turpentine in a calorimeter at 15°C. The final temperature is found to be 23°C. Take specific heat of brass as 0.092 cal/gm°C and water equivalent of calorimeter as 4 gm.

Question number: 39 (3 of 3 Based on Passage) Show Passage

» Properties of Solids & Liquids » Heat Transfer » Conduction

MCQ▾

Question

Heat lost by the ball is approximately

Choices

Choice (4) Response

a.

710 cal

b.

810 cal

c.

610 cal

d.

510 cal

Question number: 40

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

The real coefficient of volume expansion of glycerin is 0.000977 per °C and linear coefficient of expansion of glass is 0.000007 per °C. Then the apparent volume coefficient of expansion of glycerin is

Choices

Choice (4) Response

a.

0.000573 per °C

b.

0.000237 per °C

c.

0.000666 per °C

d.

0.000956 per °C

Question number: 41

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

A wire of length lm is stretched by a force of 15 N. The area of cross-section of the wire is 2 × 10 6 m 2 and Y is 2 × l0 -6 N/m 2. Increase in length of the wire will be -

Choices

Choice (4) Response

a.

3.75 × 10 -5 m

b.

4.45 × 10 -5 m

c.

2.25 × 10 -5 m

d.

Question does not provide sufficient data or is vague

Question number: 42

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

For a given material, the Young’s modulus is 2.8 times that of rigidity modulus. It’s Poisson’s ratio is

Choices

Choice (4) Response

a.

2

b.

0.4

c.

1.02

d.

0.2

Question number: 43

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

Flask is filled up to a mark with 50 cc of mercury at 8°C. If the flask and contents are heated to 38°C, how much mercury will be above the mark? (α for glass is 9 × 10 -6 /°C and coefficient of real expansion of mercury is 180 × 10 -6)

Choices

Choice (4) Response

a.

0.05

b.

0.85 cc

c.

0.46 cc

d.

0.153 cc

Question number: 44

» Properties of Solids & Liquids » Latent Heat

MCQ▾

Question

A lead bullet at 27° C just n tits when, stopped by an obstacle. Assuming that 25 % of heat is absorbed by the obstacle, then the velocity of the bullet at the time of striking (M. P. of lead = 327°C, specific heat of lead = 0.03 cal/gm °C, latent heat of fusion of lead = 6 cal/gm and J = 4.2 joule/cal)

Choices

Choice (4) Response

a.

307.5 m/sec

b.

1230 m/sec

c.

410 m/sec

d.

Question does not provide sufficient data or is vague

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