M

Mr. Dubey • 100.64K Points
Coach

Q. When a sound beam is reflected:

  • (A) The angle of reflection is found using Snell's law
  • (B) The angle of reflection equals the angle of incidence
  • (C) All the sound energy is reflected unless the acoustic impedanmce is zero
  • (D) Beam spread is decreased
Share

No solution found for this question.
Add Solution and get +2 points.

You must be Logged in to update hint/solution

Discusssion

Login to discuss.

Related MCQs

Q. If machine number is loaded in such a way that the three principla stresses at a point are 600 kg/cm2 compression. 800 kg/cm2 tension and zero. The ma

Q. Engines used for ships are normally

Q. Higher pairs are those which have

Q. Which of the following is p-type semi-conductor?

Q. Brake lining is mounted on

Q. The dielectric strength of rubber is about

Q. With the lowering of equilibrium pressure, at a given temperature, the amount of adsorbate on the adsorbent

Q. Which of the following is true for a closed heater?

Q. A thin, jagged, dark line inside the weld image on a radiographic film is probably:

Q. The reflux to a distillation column is 100 moles/hr, when the overhead product rate is 50 moles/hr. The reflux ratio is

Question analytics