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Grade: 12 

                        
Sir please tell me the concept of above question in the attachment
2 years ago

Answers : (1)

Eshan
askIITians Faculty
2095 Points 
							Dear student,

Lorentz force acting on a particle is proportional to the velocity of the body.

Now the gain in kinetic energy due to moving through potential difference is
\dfrac{1}{2}mv^2=qV
\implies v\propto\sqrt{V}
Hence the force becomes\sqrt{5}F
2 years ago
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