0

Guest

Courses New

a very thin transparent film of soap solution (thickness-0) is seen under reflection of white light.then colour of film appear to be- 1-blue 2-black 3-red 4-yellow

a very thin transparent film of soap solution (thickness-0) is seen under reflection of white light.then colour of film appear to be-
1-blue
2-black
3-red
4-yellow
 

Grade:12th pass

1 Answers

Atul
13 Points
6 years ago
For very thin films the distance travelled inside the film is insignificant and so the two reflected waves are almost exactly out of phase with each other (due to the phase change at one surface); they interfere destructively and the film appears `black`. For this reason when a soap film goes black it is about to burst

Think You Can Provide A Better Answer ?

Other Related Questions on Wave Optics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More