General Knowledge - Physics - Discussion

Discussion :: Physics - Section 1 (Q.No.70)

70. 

Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this?

  1. Diffusion
  2. Refraction
  3. Internal reflection

[A]. I, II and III
[B]. I and II
[C]. II and III
[D]. I and III

Answer: Option C

Explanation:

No answer description available for this question.

Raj said: (May 8, 2013)  
What is diffusion?

Adebc said: (Jul 1, 2013)  
Diffusion is the phenomenal in which molecules of a particle move from the region of high concentration to low concentration until it is evenly distributed.

19(2)[5](4) said: (Jan 17, 2014)  
How come that the droplets undergo TIR while refracting lights?

Hapil said: (Nov 22, 2016)  
According to me, the answer should be option A.

Tuhin said: (Dec 26, 2016)  
No answer is correct. Rainbow is caused by 3 phenomenons

1. dispersion
2. refraction
3. internal reflection

Here, the first option is diffusion (it's not correct).

Nishit said: (Jun 28, 2017)  
Rainbow is caused due total internal reflection. How can it be caused due to diffusion?

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