why does the sky appear blue during the day? where should your place an object with respect to a convex lens if you intend to use the letter as a magnifying glass?
Answers
Your first question: why does the sky appear blue during the day?
Answer: A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.
Your second question:where should your place an object with respect to a convex lens if you intend to use the letter as a magnifying glass?
Answer: A convex lens acts as a magnifying glass, when it forms a virtual, erect and magnified image of an object. For this, the object is to be placed between principal focus and optical cantre of the lens.
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Explanation: During the day the sun is almost overhead due to which the all the colours of the white light coming from the sun get equally scattered by the gases in the atmosphere. And our eye being very sensitive to blue light, makes us see the blue colour mostly thereby imparting blue colour to the sky.
For the 2nd question plz see the attachment
