- #1

rohanlol7

- 67

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## Homework Statement

Figure 1.1 shows an equilateral glass prism illuminated by a 100 W laser beam of wavelength λ = 600 nm. The refractive index of the glass of the prism is 1.50 at λ = 600 nm. The path of the light in the prism is parallel to the base of the prism. The momentum of a photon is h/ λ. Calculate the change in weight of the prism when the beam is switched on.( basically an equilateral triangle and a laser parralell to its base)

## Homework Equations

P=nhf/t

v(1)/c=1/1.5

## The Attempt at a Solution

I tried something which involved giving the photon a mass say M. and calculating the number of photons per unit time. I'm not sure how to continue.

I'm basically practicing for a contest but i don't have solutions available only questions