General Physics Questions And Answers, Set 54

 

General Physics Questions And Answers

Q1. 

If a string wave encounters a completely fixed end, what happens to its phase?

Ans.

Changes by π

Q2. 

In a standing wave the amplitude of a particle is fixed, but varies from particle to particle. True or False?

Ans.

True

Q3. 

What is the minimum distance between a node & an antinode in a standing wave?

Ans.

λ/4

Q4. 

If a standing wave is vibrating in the fourth harmonic and the wavelength is λ, what is the length of the string.

Ans.

2λ

Q5. 

Consider the case of normal modes of vibration for the air column with only one end closed. What is the length of the air column for the fundamental harmonic?

Ans.

λ/4

Q6. 

If an electric dipole is placed in a non-uniform electric field ______ will act on the dipole.

Ans.

Both force and torque

Q7. 

An electric dipole will be in stable equilibrium if the angle between the axis of the dipole and the electric field is ________

Ans.

0 degree

Q8. 

If a non-polar substance is placed in an electric field, what will happen?

Ans.

A net dipole moment will be observed

Q9. 

Dipole moment depends on _______

Ans.

Charge and length of a dipole

Q10. 

The electric field at a point on the perpendicular bisector of a dipole is directed ______

Ans.

Opposite to the dipole moment

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