TS EAMCET 6-Aug-2021 Shift 2 Question Paper

Energy of the radiation is E.
∴ Momentum of incident radiation, p=‌

E

c

∴ Momentum of reflected radiation, p′=−‌

E

c

(-ve sign arise to indicate the direction, i.e. direction of incident and reflected radiations are opposite)
∴ The total momentum transferred to the surface,
∆p=p−p′=‌

E

c

−(−‌

E

c

)=‌

2E

c