Thermal Expansion of Solids

Q.

What is the relation between Alpha, Beta, and Gamma in Thermal Expansion?

Q.

Define the coefficient of linear expansion. Give its SI unit.

Q.

What happens to the time period of a simple pendulum when its length is increased to four times its value?

Q.

Define coefficient of linear expansion.

Q. On what principle does mercury thermometer work?

1. Thermal expansion of gases
2. Thermal expansion of solids
3. Thermal expansion of liquids
4. Anomalous expansion

Q. What would happen to a hole in a metal sheet, when the sheet is heated?

1. It increases in size.
2. It decreases in size.
3. No change is seen.
4. First increases and then decreases.

Q.

Does the pendulum period depend on the angle?

Q.

poor absorbers and reflectors of heat

Q.

A bucket made of plastic does not rust like a bucket made of iron. Why?

Q. What should be the temperature rise of a brass rod , so as to increase its length by $1\%$? (Given: coefficient of linear expansion of glass rod, $\alpha =2\times {10}^{-5}{}^{\circ }{C}^{-1})$.

1. 200 ⁰C

2. 100 ⁰C

3. 1000 ⁰C

4. 500 ⁰C

Q.

Describe an experiment to demonstrate the thermal expansion in solids.

Q. When a bimetallic strip is heated:

1. it does not bend at all
2. it gets twisted in the form of an helix
3. it bends in the form of an arc
4. it's length increases linearly

Q. A jar has a mixture of hydrogen and oxygen gases in the ratio1:5, the ratio of mean kinetic energy of hydrogen and oxygen molecule is . 1. 1:16 2.1:4 3. 1:5 4. 1:1

Q. Heat transfer from one end to the other in an iron rod occurs through

1. convection
2. conduction
3. radiation

Q. What is the time taken by an object to complete one oscillation called?

Q.

What is the principle of Katers pendulum?

Q. An iron bar of length 10 m is heated from $0^{\circ }$C to ${100}^{\circ }$C. If the coefficient of linear thermal expansion of iron is $10\times {10}^{-6}{/}^{\circ }$C, the increase in the length of bar is

1. 1 cm
2. 2.0 cm
3. 1.5 cm
4. 0.5 cm

Q.

The period of oscillation of a simple pendulum is inversely proportional to the square root of acceleration due to gravity.

1. True
2. False

Q. Difference between welding and soldering

Q.

What is an oscillation?what is the time taken by an oscillating body to complete one oscillation called?

Q. The tendency of matter to change its shape, area, and volume with respect to a change in temperature is called:

1. Thermal expansion
2. Magnetic expansion
3. Artificial expansion
4. Electric expansion

Q.

In the ball and ring experiment, if the ball after heating is left to cool on the ring for some time, the ball again passes through the ring. Explain the reason.

Q. Heat transfer from one end to the other in an iron rod occurs through _____.

1. radiation
2. conduction
3. vaporization
4. convection

Q. The time period of oscillations is 0.5 s. L is 10 cm is known to have accuracy of 1mm. The time of 100 oscillations is measured with a wrist watch of 1s resolution .what is the accuracy in determination of g?

Q.

Why does a marble floor feel colder in winter than a carpeted floor?

Q.

Explain Gravesends ring -and -ball experiment to describe thermal expansion of solids.

Q.

Out of the following material whose elasticity is independent of temperature

1. steel

2. copper

3. invar steel

4. glass

Q.

Which of the following does not work on the existence of atmospheric pressure ?
(a) rise of iodine solution in the glass tube of dropper
(b) rise of cold drink in a long plastic straw
(c) sticking of suction hook on the wall of a room
(d) rise of mercury in glass tube of thermometer

Q. A plastic water bottle is filled with hot water. Will the steam expel air from inside of the bottle? After about 2 minutes the bottle is closed tightly and put in a container with cold water and ice. As the bottle cools down will the steam condense or not? Will the bottle get crushed?
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Q. Small gaps are left in between rails when laying a railway track because tracks.

1. expand in summer
2. contract in summer
3. expand in winter