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You need to login to ask any Questions from chapter Thermal-Expansion of Physics-Model-Exam

Chapter:

Thermal-Expansion

1.
An iron cubes floats in a vessel containing mercury at `20^0`c. If temperature is increased by `100^0`c , cube will float

higher lower at same level lower or higher depending upon the mass of cube

lower

Answer

2.
Two copper rods of equal lengths and unequal diameters are heated through same range of temperature. Its incfrease in length will be

more in thin rod more in thick rod same in both rod none

more in thin rod

Answer

3.
With increase in temperature density of liquid

remain same increase decrease None

decrease

Answer

4.
A solid ball of metal has a concentric spherical cavity within it. If ball is heated, volume of cavity will

decreases increases remain same none of above

decreases

Answer

5.
Two spheres of same radius are made from same material. One is hollow and or is solid. If y are heated from `20^0`c to `100^0`c

Both expand equally Hollow will expand more solid will expand more none

Both expand equally

Answer

6.
A metal sheet has a circular hole in it . When it is heated diameter of hole

increases decreases does not change may increase or decrease

increases

Answer

7. On heating liquid of cubical expansion `alpha` in a container having linear expansivity `alpha`/3, level of liquid in container will

rise fall will remain almost stationary none

rise

Answer

8.
At `4^0`c water has minimum

volume density energy conductivity

volume

Answer

9.
The coefficient of linear expansion is 18x`1o^(-5)``/^0`c. The linear expansivity on Fahrenheit scale will be

18x`10^(-5)``/^0`F 1x`10^(-4)``/^0`F 32x`10^(-5)``/^0`F 9x`10^(-5)``/^0`F

1x`10^(-4)``/^0`F

Answer

10.
A metallic piece is being weighed in a liquid whose temperature is being raised continuously. The apparent weight of metal piece

decraeses increases remain unchanged changes erratically

increases

Answer

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Topics

This Chapter Thermal-Expansion consists of the following topics

Thermal Expansion mcqa

An iron cubes floats in a vessel containing mercury at `20^0`c. If temperature is increased by `100^0`c , cube will float

Two copper rods of equal lengths and unequal diameters are heated through same range of temperature. Its incfrease in length will be

With increase in temperature density of liquid

A solid ball of metal has a concentric spherical cavity within it. If ball is heated, volume of cavity will

Two spheres of same radius are made from same material. One is hollow and or is solid. If y are heated from `20^0`c to `100^0`c

A metal sheet has a circular hole in it . When it is heated diameter of hole

On heating liquid of cubical expansion `alpha` in a container having linear expansivity `alpha`/3, level of liquid in container will

At `4^0`c water has minimum

The coefficient of linear expansion is 18x`1o^(-5)``/^0`c. The linear expansivity on Fahrenheit scale will be

A metallic piece is being weighed in a liquid whose temperature is being raised continuously. The apparent weight of metal piece

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