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JEE Main202125 Feb 2021Evening ShiftPhysicsElectromagnetic WavesActual

The wavelength of an X-ray beam is 10 Å . The mass of a fictitious particle having the same energy as that of the X-ray photons is x 3 h kg . The value of x is ___ . ( h = Planck's constant)

Correct answer

0

Step-by-step solution

h c λ = m c 2 ⇒ m = h c λ = h 3 × 10 8 × 10 × 10 - 10 = 10 h 3   kg

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