Question

1. why is light mass less?

2. If light is mass less why is it attracted towards the black hole as we know black holes attract only mass full objects?
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Answer 1

Answer:

1. Photons are the smallest measure of light, and no, they don't have mass. So that's easy, right? Light is composed of photons, which have no mass, so therefore light has no mass and can't weigh anything.
2. Everyone said that the light (photon) have no mass. Perhaps the light (photon) have mass but this mass is very small (very close to zero but is not quite zero). According to equation E = mC^2 the energy is equivalent to the mass. Then we can said that photon have mass (m) due to having energy (E). For example if E = 10^-4J the mass that is equal to this energy is 0.00000000000000001g. This value (10^-17g) is very close to zero but is not quite zero. The mass of electron is 9×10^-28g. This value is very close to zero. If the mass of electron be consider zero?

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Explanation: