a convex lens focuses sunlight on white paper and black paper kept at focus. Which would start burning first ?
black or white?

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Solution

Dear Student ,
Hence the black paper being a good absorber of heat it will start burn first and white paper being a good reflector starts to burn after a while .

Regards

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a convex lens focuses sunlight on white paper and black paper kept at focus. Which would start burning first ? black or white?

Dear Student , Hence the black paper being a good absorber of heat it will start burn first and white paper being a good reflector starts to burn after a while . Regards

a convex lens focuses sunlight on white paper and black paper kept at focus. Which would start burning first ?
black or white?

Dear Student ,
Hence the black paper being a good absorber of heat it will start burn first and white paper being a good reflector starts to burn after a while .

Regards