NEET 2019 Exam Paper (Odisha) (180 Q) - Mock Test

A particle of mass $5m$ at rest suddenly breaks on its own into three fragments. Two fragments of mass $m$ each move along mutually perpendicular directions with speed $v$ each. The energy released during the process is:

The radius of the first permitted Bohr orbit for the electron in a hydrogen atom equals $0.53\text{A˚}$ and its ground state energy equals $-13.6\text{eV}$. If the electron in the hydrogen atom is replaced by a muon (${\mu }^{-}$) [charge same as electron and mass $207m_e$ ], the first Bohr radius and ground state energy will be ($m_e$ represents the mass of an electron):

For a transparent medium relative permeability and permittivity, ${\mu }_r$ and ${ϵ}_r$ are $1.0$ and $1.44$ respectively. The velocity of light in this medium would be:

The $\gamma =\frac{C_p}{C_v}$ value for hydrogen, helium, and another ideal diatomic gas $X$ (whose molecules are not rigid but have an additional vibrational mode), are respectively equal to:

A double convex lens has a focal length of $25\text{cm}$. The radius of curvature of one of the surfaces is double of the other. What would be the radii if the refractive index of the material of the lens is $1.5$?