Which one of the following is incorrect statement?
A beam of non relativistic charged particles moves without deviation through the region of space $$A$$ (Fig.) where there are transverse mutually perpendicular electric and magnetic fields with strength $$E$$ and induction $$B$$. When the magnetic field is switched off, the trace of the beam on the screen $$S$$ shifts by $$\triangle x$$. Knowing the distances $$a$$ and $$b$$, find the specific charge $$q/m$$ of the particles.
When the speed of electrons increases, then the value of its specific charge
An electron at rest is accelerated through a potential difference of 200 V. If the electron acquires a velocity $$8.4 \times 10^6 m/s$$, the value of e/m of electron is
Order of $$q/m$$ ratio of proton, $$\alpha-$$ particle and electron is
Which of the following will have the least value of $$\dfrac{q}{m}$$
An electron beam accelerated from rest through a potential difference of 5000 V in a vacuum is allowed to impinge on a surface normally. The incident current is 50 $$\mu A$$ and if the electrons come to rest on striking the surface, the force on it is
An electron is accelerated through a potential difference of $$200 \,V$$. If e/m for the electron be $$1.6\times 10^{11}$$ coulomb $$kg^{-1}$$, then the velocity acquired by the electron will be
When the electron in the discharge tube is accelerated to high speeds
In J.J. Thomson's experiment the specific charge of an electron $$(e/m)$$ is related to potential difference $$(V)$$ between the cathode and the anode as
An electron is accelerated in an electric field of $$40V$$ $$cm^{-1}$$. If e/m of electron is $$1.76 \times 10^{11}$$ $$Ckg^{-1}$$, the acceleration is