NEET 2017 Question Paper - Code B - Mock Test

The acceleration due to gravity at a height $1\text{km}$ above the earth is the same as at a depth $d$ below the surface of earth. Then:

Two blocks A and B of masses $3m$ and $m$ respectively are connected by a massless string and suspended by a massless spring. The magnitudes of acceleration of A and B immediately after the string is cut, are respectively:

The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is:

A beam of light is incident normally on a plane mirror fixed at a distance $x$ from a source. When the mirror is rotated through a small angle $\theta$, the reflected spot move through a distance $y$ on a scale. The angle $\theta$ is given by:

A spring of force constant $k$ is cut into lengths of ratio $1:2:3$. They are connected in series and the new force constant is $k^{\prime }$. Then they are connected in parallel and force constant is $k^{\prime \prime }$. Then $k^{\prime }:k^{\prime \prime }$ is: