Question

Q220) The value of Planck's constant is 6.63 × 10^{–34} Js. The speed of light is 3 × 10^{17} nm s^{–1}. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of 6 × 10^{15} s^{–1}? [NEET-2013]

Q220) The value of Planck's constant is 6.63 × 10

SOLUTION

Use formula λ = C/ν here ν if frequency

As velocity oflightis given in nm/s and wave length asked is also in nm no need to convert in m

Answer:(b)