does convex lense focus heat waves also?

Asked by subhash chand | 2nd Mar, 2011, 12:00: AM

Expert Answer:

Dear student
That is the reason why one can burn paper using convex lens by letting it face the sunlight pass through it.The infra red/heat producing radiations pass through the lens, converge at its focus & if a piece of paper is placed at its focus, it will burn.

Answered by  | 2nd Mar, 2011, 10:14: PM

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