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11.Dual Nature of Radiation and matter
easy
The mass of the electron varies with
A
The size of the cathode ray tube
B
The variation of $‘g’$
C
Velocity
D
Size of the electron
Solution
(c)Mass is basically a constant term for any physical application at low velocity. But in accordance with Einstein’s theory of relativity, at higher speeds the mass of the particle change according to formula
$m = \frac{{{m_0}}}{{\sqrt {1 – ({v^2}/{c^2})} }}$
Standard 12
Physics
