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For a certain light, there are 2 xx 10^(...

For a certain light, there are `2 xx 10^(3)` waves in 1.5 mm in air. The wavelength of light is

A

750 nm

B

`75 Å`

C

`750 Å`

D

`75 xx 10^(7) m`

Text Solution

Verified by Experts

The correct Answer is:
A
Wavelength `= ("Thickness or length of medium")/("Wave no. or of waves")`
`= (1.5 xx 10^(-3))/(2 xx 10^(3)) = 750 nm`
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