MCQ
The mass of the electron varies with
- AThe size of the cathode ray tube
- BThe variation of ' $g$ '
- ✓Velocity
- DSize of the electron
✓
Answer
Correct option: C.
Velocity
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$m=\frac{m_0}{\sqrt{1-\left(v^2 / c^2\right)}}$
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