AIPMT 2012 Mock Test

Two radiations of photon energies $1\text{eV}$ and $2.5\text{eV}$ illuminate a surface of work function $0.5\text{eV}$ successively. The ratio of the maximum speeds of the emitted electrons is:

For the angle of minimum deviation of a prism to be equal to its refracting angle ($A$), the prism must be made of a material whose refractive index ($\mu$):

If the momentum of an electron is changed by $P$, then the de Broglie wavelength changes by $0.5\%$. The initial momentum of electron was:

Three masses are placed on the x-axis: $300\text{g}$ at origin, $500\text{g}$ at $x=40\text{cm}$ and $400\text{g}$ at $x=70\text{cm}$. The distance of the centre of mass from the origin is:

A car of mass $m$ is moving on a level circular track of radius $R$. If ${\mu }_s$ is the static friction, the maximum speed is: