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Spectrum — Physics STD 10 — Question

ICSE BoardEnglish MediumSTD 10PhysicsSpectrum1 Mark
Question
Two waves A and B have wavelength 0.01 Å and 9000 Å respectively.
(a) Name the two waves.
(b) Compare the speeds of these waves when they travel in vacuum.
✓

Answer

(a) A- Gamma rays, B-infrared radiations
(b) Ratio of speeds of these waves in vacuum is 1:1 as all electromagnetic waves travel with the speed of light in vacuum.

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