NEET 2017 Question Paper - Code A Mock Test

A rope is wound around a hollow cylinder of mass $3\text{kg}$ and radius $40\text{cm}$. What is the angular acceleration of the cylinder if the rope is pulled with a force of $30\text{N}$?

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

The two nearest harmonics of a tube closed at one end and open at other end are $220\text{Hz}$ and $260\text{Hz}$. What is the fundamental frequency of the system?

A thin prism having refracting angle $10^{\circ }$ is made of glass of refractive index $1.42$. This prism is combined with another thin prism of glass of refractive index $1.7$. This combination produces dispersion without deviation. The refracting angle of second prism should be:

The resistance of a wire is ‘$R$ ’ ohm. If it is melted and stretched to ‘$n$ ’ times its original length, its new resistance will be: