c=v×λ;λ=vc⇒λ=8×10153×108=0.375×10−7 m=0.375×10−7×109 nm=0.375×102 nm=37.5 nm≈4×10 nm
The value of Planck's constant is 6.63 ×10−34Js. The velocity of light is 3.0× 108 ms−1. Which value is closest to the wavelength in nanometers of quantum of light with frequency of 8×1015 s−1 ?
Held on 30 Apr 2003 · Verified 9 Jul 2026.
2×10−25
5×10−18
4×101
3×107
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