Answer:
785.398 W
444.5698 m
Explanation:
I = Intensity of sound
r = Distance
The intensity of sound is given by

Power

The power output of the speaker is 785.398 W
If 


The distance would be 444.5698 m
"SEM" or Scanning Electron Microscope is the one among the following choices given in the question that <span>gives the highest amount of magnification. The correct option among all the options that are given in the question is the fourth option or the last option. I hope the answer has come to your help.</span>
This is the half life of the substance. The half life is the time it takes for the substance to become reduced by half as a consequence of decay.
Angle made by the light ray with the surface of mirror is given as
degree
now as we know as per law of reflection that
angle of incidence = angle of reflection
So here we can say that


now the total angle that reflected ray will rotate with respect to incident ray is known as angle of deviation


so here reflected light will deviate by total angle of 40 degree fron its incident ray.