List of top Physics Questions asked in OJEE

In a stationary wave all the particies
Angle between wave velocity and particle velocity of a longitudinal wave is
An observer moves towards a stationary source of sound with a velocity that is one-fifth the velocity of sound. The apparent change in frequency is
A light ray going from air is incident (as shown in figure) at one end of a glass fibre (refractive index $ \mu = 1.5$) making an incidence angle of $60^\circ$ on the lateral surface,
so that it undergoes a total internal reflection. How much time would it take to traverse the straight fibre of length 1 km?
A particle of mass $2 \times 10^{-3}$ kg, charge $4 \times 10^{-3}$ C enters in an electric field of 5 V/m, then its kinetic energy after 10 s is
The distance between two charges $6\,\mu\,C$ and $15\,\mu\,C$ is $2\,m$. At what point on the line joining the two, the intensity will be zero?
Charge $Q$ is distributed over a ring, then the force on charge $q$ placed at the centre of the ring will be
The figure shows some of the electric field lines corresponding to an electric field, The figure suggests
The effective capacitance between $A$ and $B$ is
A luminous body radiates energy at a rate $3.6 \times 10^{28}$ J/s, then loss of mass of the body per second is
The equation of a particle executing SHM is $\frac{2d^2x}{dt^2}+32x=0$Then the time period of the body is
The effective resistance between points A and C for the network shown in figure is
Sphygmomanometer is an instrument used to record
$ C_v $ for $O_2 $ is $\frac{ 5}{2} $ R with increase in temperature it becomes $ \frac{ 7}{2} $ R due to a
Average velocity of an ideal gas molecule is
Application of a forward bias to a p-n junction
The figure shows graphs of pressure versus density for an ideal gas at two temperatures $T_1$ and $ T_2$, then
The resistance of a wire is 24$O$. lt is so stretched that the length becomes four times, then the new resistance of wire will be
When white light passes through a glass prism, one gets spectrum on the other side of the prism. In the emergent beam, the ray which is deviating least is
Three electric bulbs of $200\, W, 200 \,W$ and $400\, W$ are shown in figure. The resultant power of the combination is
Two charged spheres of radii $R_1 \, and \, R_2$ have equal surface charge density. The ratio of their potential is
Number of neutrons in $C^{12}$ and $ C^{14} \, are $
Sharp peak point $A$ represents
The temperature of a body is increased from $-73^{\circ}\,C$ to $327\,^{\circ}\,C$. Then the ratio of emissive power is
Two identical cells each of emf E and internal resistance r are connected in parallel with an external resistance R. To get maximum power developed across R, the value of R is