Physics
(a) Write the approximate wavelengths for (i) blue and (ii) red light.
(b) The wavelength of violet and red light are 4000 Å and 8000 Å respectively.
Which of the two has higher frequency?
Answer
(a) The approximate wavelengths for blue light is 4800 Å and red light is 8000 Å.
(b) The colour of light with shortest wavelength has the highest frequency.
When we compare the wavelength of violet colours (4000 Å) and red (8000 Å), we observe that the wavelength of violet colour is shorter than that of red.
Hence, Violet light of 4000 Å has higher frequency.
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