1.

A plane electromagnetic wave of wave intensity 6 W // m^(2) strikes a small mirror of area 39 cm^(2), held perpendicular to the approaching wave. The momentum transferred in kg ms^(-1) by the wave to the mirror each second will be:

Answer»

<P>`1.2 XX 10^(-10)`
`2.4 xx 10^(-9)`
`3.6 xx 10^(-8)`
`4.8 xx 10^(-7)`

Solution :Transferred `"MOMENTUM" // "SECOND"` to mirror is
`P=(2AI)/(C)=1.21 xx 10^(-10) kg ms^(-1)`


Discussion

No Comment Found

Related InterviewSolutions