List of top Physics Questions asked in JKCET

Electromagnetic waves can be deflected by

A galvanometer has a resistance $ 50\,\Omega $ . A resistance of $ 5\,\Omega $ is connected parallel to it. Fraction of the total current flowing through galvanometer is

From a balloon rising vertically upwards as $ 5\,m/s $ a stone is thrown up at $10 \,m/s$ relative to the balloon. Its velocity with respect to ground after $ 2\,s $ is (assume $ g=10\,m/s^{2} $ )

Angle of banking for a vehicle speed of $ 10\,m/s $ for a radius of curvature $ 10\,m $ is (assume $ g=10\,m/s^{2} $ )

Equation of progressive wave is $\hspace25mm y = A \sin \big(10 \pi x + 11 \pi t + \frac{\pi}{3}$.

Density of liquid in CGS system is $ 0.625\,g/cm^{3} $ What is its magnitude in SI system?

If the length of rod $A$ is $ 3.25\pm 0.01\,cm $ and that of $B$ is $ 4.19\pm 0.01\,cm, $ then the rod $B$ is longer than rod $A$ by

For protecting a sensitive equipment from external magnetic field, it should be

Petrol engine does the work during

A circular coil of $20$ turns and radius $10 \,cm$ is placed in uniform magnetic field of $ 0.10\,T $ normal to the plane of the coil. If the current in coil is $5 \,A$, then the torque acting on the coil will be

A perfect black body is one whose emissive power is

A geostationary satellite is revolving around the earth. To make it escape from gravitational field of earth, its velocity must be increased

What is the mass of $ 2\,L $ of nitrogen at $ 22.4\,arm $ pressure and $ 273\,K $ ?

The electric field due to an electric dipole at a distance $r$ from its centre in axial position is $E$. If the dipole is rotated through an angle of $ 90^{\circ} $ about its perpendicular axis, the electric field at the same point will be

Two simple pendulums of lengths $ 1.44\,m $ and $ 1 m $ start swinging together. After how many vibrations will they again start swinging together?

Three sources of equal intensities with frequencies $400,401$ and $402\, vib/s$ are sounded together. The number of beat/s is

A wave has velocity $u$ in medium $P$ and velocity $ 2u $ in medium $Q$. If the wave is incident in medium $P$ at an angle $ 30^{\circ}, $ then the angle of refraction will be

For spheres each of mass $M$ and radius $R$ are placed with their centres on the four comers $A, B, C$ and $D$ of a square of side $b$. The spheres $A$ and $B$ are hollow and $C$ and $D$ are solids. The moment of inertia of the system about side $AD$ of square is

Two pendulums begin to swing simultaneously. If the ratio of the frequency of oscillations of the two is $ 7:8, $ then the ratio of lengths of the two pendulums will be

A particle describes a horizontal circle in a conical funnel whose inner surface is smooth with speed of $ 0.5\,m/s $ . What is the height of the plane of circle from vertex of the funnel?

The spectral energy distribution of a star is maximum at twice temperature as that of sun. The total energy radiated by star is

$ 2\,g $ of water condenses when passed through $ 40\,g $ of water initially at $ 25^{\circ}C $ . The- condensation of steam raises the temperature of water to $ 54.3^{\circ}C $ . What is the latent heat of steam?

In $ 1\,m $ long open pipe what is the harmonic of resonance obtained with a tuning fork of frequency $ 480\,Hz $ ?

A body of mass $ 4\,kg $ moving with velocity $ 12\,m/s $ collides with another body of mass $ 6 \,kg $ at rest. If two, bodies stick together after collision, then the loss of kinetic energy of system is

If the velocity of a particle is given by $ v=(180-16x)^{1/2}\,m/s$ . then its acceleration will be