General Physics Questions And Answers, Set 45

 

General Physics Questions And Answers

Q1. 

What is Pascal’s Law?

Ans.

A pressure change at any point in the fluid is transmitted throughout the fluid such that the same change occurs everywhere

Q2. 

A body has a temperature of 200°C and is kept in a room containing air at 25°C. We can use Newton’s law of cooling. True or False?

Ans.

False

Q3. 

If we hold a metal rod from one end and dip the other in a source of fire, what will happen to the temperature of the rod at steady state?

Ans.

Stay nonuniform

Q4. 

Select the correct statement

Ans.

Water can exist in all 3 phases

Q5. 

What is the principle of a calorimeter?

Ans.

The total heat lost by a hot body is same as the total heat gained by the cold body provided no heat is lost to the surroundings

Q6. 

It is possible that with decrease in temperature volume may increase. True or False?

Ans.

True

Q7. 

Boyle’s and Charle’s law are obeyed by low density gases only. True or False?

Ans.

True

Q8. 

What is the slope of line drawn for a graph between temperature in °C & °F?

Ans.

1.8

Q9. 

What is the correct order of steps for a carnot cycle?

Ans. 

Isothermal expansion, adiabatic expansion, isothermal compression, adiabatic compression

Q10.

According to the first law of thermodynamics, a book lying on a table can fly upwards on its own by using the internal energy of the table. True or False?

Ans.

True

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