An angle of refraction of 90-degrees
Answer:
तिकडी एकच
Explanation:
आप सल क्ल वल दन रव दंचंबी एक गम ok plz
Some one already asked this question and you can copy paste and google it but I believe it is c you may want to double check
The emissivity of the earth is 0.5
The emissivity of the earth is calculated by the Stefan's law
