List of top Physics Questions asked in JIPMER

If work function of a metal is $4.2\,eV$, the cut off wavelength is:

A short linear object of length b lies along the axis of a concave mirror of focal length $ f $ at a distance $ u $ from the pole of the mirror, what is the size of image?

A raft of wood of mass $120\, kg$ floats in water. The weight that can be put on the raft to make it just sink, should be $\left(d_{ \text{raft} }=600\, kg / m ^{3}\right)$

What should be the minimum value of refractive index of the material of the prism for the reflections to take place as shown in the figure:

A steel scale measures the length of a copper wire as $80.0\, cm$, when both are at $20^{\circ} C$, the calibration temperature for the scale. What would the scale read for the length of the rod when both are at $40^{\circ} C ?$ Given: $\alpha$ for steel $=11 \times 10^{-6}$ per ${ }^{\circ} C$ and $\alpha$ for $Cu =11 \times 10^{-6} \text{per} ^{\circ} C$

Two similar coils are kept mutually perpendicular such that their centres coincide. At the centre, find the ratio of the magnetic field due to one coil and the resultant magnetic field through both coils if the same current is flown :

The potential difference between points $A$ and $B$ is:

The dimensional formula for Youngs modulus is:

A police jeep is chasing with velocity of $45\, km/h$ a thief in another jeep moving with velocity $153\,km/h$. Police fires a bullet with muzzle velocity of $180\,m/s$ The velocity it will strike the car of the thief is:

A sphere of diameter $0.2\,m$ and mass $2\, kg$ is rolling on an inclined plane with velocity $ \upsilon =0.5\, m/s$. The kinetic energy of the sphere is:

The radius of the convex surface of planoconvex lens is $20\,cm$ and the refractive index of the material of the lens is $1.5$. The focal length is:

Five particles of mass $2\,kg$ are attached to the rim of a circular disc of radius $0.1\,m$ and negligible mass. Moment of inertia of the system about the axis passing through the centre of the disc and perpendicular to its plane is:

The length, breadth and thickness of a block are given by $l=12\, cm , b=6 \,cm$ and $t=2.45 \,cm .$ The volume of the block according to the idea of significant figures should be

A coil having $N$ turns carry a current as shown in the figure. The magnetic field intensity at point $P$ is:

A can filled with water is revolved in a vertical circle of radius $4\,m$ and the water does not fall down. What must be the maximum period of revolution?

A conducting sphere of radius $R=20\, cm$ is given a charge $Q=16 \,\mu C$. What is $\vec{ E }$ at centre?

In junction diode, the holes are because of

The spring extends by $x$ on loading, then energy stored by the spring is : (if $T$ is the tension in spring and $k$ is spring constant)

When a resistance of $\alpha\, \Omega$ is connected at the ends of a battery, its potential difference decreases from $40\, V$ to $30\, V$. The internal resistance of the battery is

If vibration of string is to be two times then tension in the string must be made :

The ratio of electrostatic and gravitational forces acting between electron and proton separated by a distance $5 \times 10^{11} m$, will be (Charge on electron $=1.6 \times 10^{-19} C$, mass of electron $=9.1 \times 10^{-31} kg$, mass of proton $=1.6 \times 10^{-27} kg$ $\left.G=6.7 \times 10^{-11} Nm ^{2} / kg ^{2}\right)$

A stone is thrown with an initial speed of $4.9\, m / s$ from a bridge in vertically upward direction. It falls down in water after $2\, \sec$. The height of bridge is

The half-life of a radioactive substance is $3.6$. How much of $20\,mg$ of this radioactive substance will remain after $36$ days ?

A siren emitting sound of frequency $500\, Hz$ is going away from a stationary listener with a speed of $50\, m / s$, the frequency of sound heard directly from the siren is

The work done in pulling up a block of wood weighing $2\, kN$ for a length of $10\, m$ on a smooth plane inclined at an angle of $15^{\circ}$ with the horizontal is