Which of the following electro-magnetic waves has the
longest wave-length?

1 Ultraviolet rays

2 Light rays

3 Gamma rays

4 Infra-red rays

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Which of the following electro-magnetic waves has the longest wave-length? 1 Ultraviolet rays ..

Answer / guest

(4) Infra-red rays

Is This Answer Correct ?    12 Yes 0 No

Which of the following electro-magnetic waves has the longest wave-length? 1 Ultraviolet rays ..

Answer / suchi

Infra-red rays

Is This Answer Correct ?    7 Yes 3 No

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