A proton (mass $m$ and charge $+e$) and an $\alpha - $particle (mass $4m$ and charge $+2e$) are projected with the same kinetic energy at right angles to the uniform magnetic field. Which one of the following statements will be true
The $\alpha - $ particle will be bent in a circular path with a small radius that for the proton
The radius of the path of the $\alpha - $ particle will be greater than that of the proton
The $\alpha - $ particle and the proton will be bent in a circular path with the same radius
The $\alpha - $ particle and the proton will go through the field in a straight line
An electron and a proton enter a magnetic field perpendicularly. Both have same kinetic energy. Which of the following is true
$1$ $\mathrm{T}$ $=$ ...... Guass.
A proton of mass $m$ and charge $+e$ is moving in a circular orbit in a magnetic field with energy $1\, MeV$. What should be the energy of $\alpha - $particle (mass = $4m$ and charge = $+ 2e),$ so that it can revolve in the path of same radius.......$MeV$
A charged particle moves in a uniform magnetic field. The velocity of the particle at some instant makes an acute angle with the magnetic field. The path of the particle will be
A particle moving in a magnetic field increases its velocity, then its radius of the circle