Properties of Solids & Liquids (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 98 - 101 of 190

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Question number: 98

» Properties of Solids & Liquids » Heat Transfer » Radiation

MCQ▾

Question

Two thermometers A and B are exposed in sunlight. The bulb of A is painted black, But that of B is not painted. The correct statement regarding this case is

Choices

Choice (4) Response

a.

Temperature of A will rise faster than B but the final temperature will be the same

b.

Temperature of B will rise faster

c.

Temperature of A will remain more than B

d.

A and B show equal rise in beginning

Question number: 99

» Properties of Solids & Liquids » Surface Energy and Surface Tension

MCQ▾

Question

A film of water is formed between two straight parallel wires of length 10 cm each separated by 0.5 cm. If their separation is increased by 1 mm while still maintaining their parallelism, how much work will have to be done (Surface tension of water = 70 × 10 -2 N/m)

Choices

Choice (4) Response

a.

2.88 × 10 -5 Joule

b.

1.44 × 10 -5 Joule

c.

7.22 × 10 -6 Joule

d.

5.76 × 10 -5 Joule

Question number: 100

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

A steel wire is 6.0 m long and 2 mm in diameter. Young’s modulus of steel is 1.96 × 10 11 N/m 2. If a mass of 30 kg is suspended from it the elongation produced will be -

Choices

Choice (4) Response

a.

127 mm

b.

2.54 mm

c.

1.27 mm

d.

1.91 mm

Question number: 101

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

The coefficient of apparent expansion of mercury in a glass vessel is 153 × 10 -6 /°C and in a steel vessel is 144 × 10 -6 / 0 C If a for steel is 12 × 10 -6 / 0 C, then that of glass is

Choices

Choice (4) Response

a.

36 × 10 -6 / o C

b.

27 × 10 -6 /°C

c.

6 × 10- 6 /°C

d.

9 × 10 - 6/° C

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