General Physics Questions And Answers, Set 55

 

General Physics Questions And Answers

Q1. 

Consider standing waves in an air column with one end closed. What is a pressure node?

Ans.

Least pressure change

Q2. 

Standing waves can be produced when two identical waves, having a phase difference of π, are travelling in the same direction. True or False?

Ans.

False

Q3. 

A wave having an amplitude of 3cm is to be superimposed with another wave of the same amplitude. What should be their phase difference if the net amplitude has to be 0?

Ans.

π

Q4.

In superposition of waves the displacements get added like vectors. True or False?

Ans.

True

Q5. 

What is the expression for wave speed in the given equation: y = Asin(kx-wt + π)?

Ans.

w/k

Q6. 

A string has a mass of 100gm & is under a tension of 10N. What should be its length if the speed of transverse waves is to be 10m/s on the string.

Ans.

1m

Q7. 

Why is the speed of longitudinal waves sound in solids greater than that in liquids?

Ans.

Solids have greater bulk modulus and density than gases but increase in bulk modulus dominantes over increase in density

Q8. 

The formula v = √(P/ρ) can be used for any gas considering isothermal process. True or False?

Ans.

False

Q9. 

Laplace correction makes use of which of the following processes?

Ans.

Adiabatic

Q10. 

What does the given equation: x = Asin(ky+wt+a) represent?

Ans.

Wave travelling along negative y direction

🎕🎕🎕

⮞General Physics Questions And Answers, Set 54[PREV]

⮞General Physics Questions And Answers, Set 56[NEXT]

🎕🎕🎕