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.

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

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

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

Semicircle and straight rod AB

Semicircle and Straight Rod AB

In above figure we shows that two rods of same material are joint.

Choices

Choice (4) Response

a.

b.

c.

d.

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