Science, asked by dhruvi34, 1 year ago

the property of light travelling in a straight line is known as

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Answered by suryansh060
33
The property of light travelling in a straight line is called rectilinear propagation.
Answered by roopaanil
13

A thin line of light energy is called a Light beams and light rays always travel in straight lines. This explains why shadows form behind objects. Shadows form when an object blocks a light beam.]

Actually it's inertia but with a twist...photons are mass-less. Even so they do have observable momentum P = hF/c = E/c where E = hF is the photon energy and c is c, what else? And, ta da, E = Mc^2 = hF for mass-less particles where M = hF/c^2 is the relativistic inertia of those photons. [See source.]

Source(s): From M = m/sqrt(1 - (v/c)^2) we can show that E^2 = e^2 + k^2; where E = Mc^2, e = mc^2, and k = Mvc is the kinetic energy of a particle. But note when the particle is mass-less and m = 0. We have E^2 = k^2 of E = Mc^2 = k = hF = E where E is the total energy of the photon. And there you are: M = hF/c^2 the inertia of that photon that wants to go straight ahead. QED.

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