Calculate the momentum transferred to a surface when a radiation of energy E falls normally on it. Assume that the reflectivity of the surface is unity.

Question

Calculate the momentum transferred to a surface when a radiation of energy E falls normally on it. Assume that the reflectivity of the surface is unity., E / c, 2 E / c, E c, E / c 2

MARKS App · Accepted Answer

Initial momentum = E / c Final momentum = - E / c ∴ Change of momentum = E c - - E c = 2 E c ∴ Momentum transferred to surface = 2 E c .

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