Properties of Solids & Liquids (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 173 - 176 of 190

Visit this page to view all the question topics

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 173

» Properties of Solids & Liquids » Heat Transfer » Conduction

MCQ▾

Question

Three rods of the same dimension have thermal conductivities 3K, 2K and K. They are arranged as shown in fig. with their ends at 100°C, 50°C and 20°C. The temperature of their junction is

Choices

Choice (4) Response

a.

70°C

b.

60°C

c.

50°C

d.

35°C

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 174

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

Flask is filled up to a mark with 40 cc of mercury at 20°C. If the flask and contents are heated to 30°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 /°C

Choices

Choice (4) Response

a.

0.0708 cc

b.

0.0005

c.

0.8500 cc

d.

0.0153 cc

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 175

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

The coefficient of volumetric expansion of mercury is 18 × 10 -5 / o C. A thermometer bulb has a volume 10 -6 m 3 and cross section of stem is 0.004 cm 2. Assuming that bulb is filled with mercury at 0°C then the length of the mercury column at 100°C is

Choices

Choice (4) Response

a.

9.2 mm

b.

4.5 cm

c.

18.8 mm

d.

7.4 cm

To view these problems with solutions proceed here and click "Subscribe Now".

Question number: 176

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

A glass flask of volume one liter at 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 0.1 × l0 -4 /ºC?

Choices

Choice (4) Response

a.

2.12 cc

b.

21.2 cc

c.

15.2 cc

d.

1.52 cc

To view these problems with solutions proceed here and click "Subscribe Now".