CBSE Class 10: Atmospheric Refraction Videos | Dispersion of Light

• why does the sun appear reddish early in the morning? will this phenomenon be observed by an astronaut on the moon ? give reason to justify your answer
• twinking of stars
• If the stars too are as near as planets then they donot twinkle? And if the planets are as far as stars then can they twinkle?  
• Explain twinkling of stars and draw diagram.
• Why do stars appears twinkling 
• Does refraction take place in the atmosphere ? Give reason.
• Provide an example to show the atmospheric refraction.
• Atmospheric refraction results into some atmospheric phenomena. State some examples.
• What is the time difference by which we see the sunset ?
• Time from sunrise to sunset is lengthened by how many minutes?

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