Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

In the interference of electomagnetic wave by a thin film the amplitude of individual transmitted waves is different waves, how is it possible as all the electromagnetic waves have same amplitude?

In the interference of electomagnetic  wave by a thin film  the amplitude of individual transmitted waves is different waves, how is it possible as all the electromagnetic waves have same amplitude?

Grade:12

1 Answers

dolly bhatia
200 Points
2 years ago
The amplitude is related to the energy per unit time per unit area (the intensity or power flux) carried by that wave. Specifically, the intensity is proportional to the square of the amplitude. This fact is usually proved on a case-by-case basis for different physical scenarios, rather than for general solutions of the wave equation.

Typically, the power supplied by a wave is averaged over many periods; since the wave is not at peak amplitude for most of oscillation, it does not make sense for the peak amplitude to be the only important factor. Furthermore, for waves that are not harmonic (not sinusoidal), there may not be a single well-defined peak amplitude.

In these cases, it is more correct to use the root-mean-square amplitude derived by taking the square root of the average of y^2(x,t) over a period. When the waves are harmonic, averaging the square of the sine or cosine function over a period typically contributes a factor of ½.

If the solution to the wave equation describes sound waves, the intensity directly corresponds to the loudness of the wave, as typically measured in decibels. The decibel scale measures the loudness of sounds only as relative to the threshold of human hearing.

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free