Properties of Solids & Liquids (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 94 - 97 of 190

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Question number: 94

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

MCQ▾

Question

The amount of work done in blowing a soap bubble such that its diameter increases from d to D is (T = surface tension of the solution)

Choices

Choice (4) Response

a.

b.

c.

d.

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Question number: 95

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

MCQ▾

Question

Two soap bubbles of radii r 1 and r 2 equal to 2.5 cm and 3.9 cm are touching each other over a common surface S 1 S 2. Its radius will be

Choices

Choice (4) Response

a.

6.96 cm

b.

4.45 cm

c.

6.90 cm

d.

4.20 cm

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Question number: 96

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

A glass flask of volume one liter at 0 0 C is filled, level full of mercury at this temperature. The flask and mercury are now heated to 100 0 C. How much mercury will spill out, if coefficient of volume expansion of mercury is 1.82 × 10 -4 /°C and linear expansion of glass is 0.2 × l0 -4 /ºC?

Choices

Choice (4) Response

a.

151 cc

b.

212 cc

c.

152 cc

d.

176 cc

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Question number: 97

» Properties of Solids & Liquids » Heat Transfer » Conduction

MCQ▾

Question

Two rods (one semi-circular and other straight) of same material and of same cross-sectional area are joined as shown in the figure. The points A and B are maintained at different temperature. The ratio of the heat transferred through a cross-section of a semi-circular rod to the heat transferred through a cross section of the straight rod in a given time is

Choices

Choice (4) Response

a.

b.

c.

d.

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