Photoelectric EffectHard
Question
A laser beam (λ = 633 nm) has an power of 3 mW. What will be the pressure exerted on a surface by this beam if the cross sectional area is 3 mm2. (Assume perfect reflection and normal incidence)
Options
A.6.6 × 10-3 N/m2
B.6.6 × 10-6 N/m2
C.6.6 × 10-9 N/m2
D.6.6 × N/m2
More Photoelectric Effect Questions
If S is stress and Y is Young′s modulus of a material of wire, then energy stored in the wire, then energy stored ...The momentum of a photon in an X-ray beam of 10-10 metre wavelength is :-...According to Mosley′s law, the frequency of a characteristic spectral line in X-ray spectrum varies as :-...As the mass number A increases, the binding energy per nucleon in a nucleus...-In Davisson - Germer experiment, Nickel crystal acts as :-...