Two Parallel Plates Are Placed 5 Cm Apart In An Evacuated Tube And A Potential Difference Of 200 V Is Applied Across Them? What Is The Force Experienced By An Electron At Rest In The Region Between The Plates?   

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Two parallel plates are placed 5 cm apart in an evacuated tube and a potential difference of 200 V is applied across them? What is the force experienced by an electron at rest in the region between the plates?   


Correct option is

Electric field E  










An electron and a photon each has a wavelength 1.00 nm. Find their momenta. Given, 


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The first scientist to measure the charge to mass ratio of the electron was