General Physics Questions And Answers, Set 53

 

General Physics Questions And Answers

Q1. 

A displacement function is given by: x = exp(sin2t). It is periodic. True or False?

Ans.

True

Q2. 

In case of electromagnetic waves, doppler shifts are independent of whether source moves or observer provided relative speed is the same. True or False?

Ans.

True

Q3. 

A source of sound moves towards an observer. What happens to the speed of sound in the medium?

Ans.

Remains the same

Q4. 

If both the source of sound and observer are moving, the apparent frequency will be different from the actual frequency. True or False?

Ans.

False

Q5. 

Consider the phenomenon of beats & select the correct statement.

Ans.

It correspond to the change in intensity we hear due to interference of 2 waves having close frequencies

Q6. 

Gauss’s Law is applicable only in the case of the electric field. This statement is __________

Ans.

False

Q7. 

A non-conducting sphere has uniform charge density in it. The electric field at a point inside the sphere will be _______

Ans.

Only due to the charge inside that point

Q8. 

The term ‘volume charge density’ is valid for a solid conducting sphere.

Ans.

False

Q9. 

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

Ans.

Torque but no force

Q10. 

A dipole is placed in an electric field such that the axis of the dipole is parallel to the electric field. The torque acting on the dipole will be the maximum in this case. The statement is _____

Ans.

False

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