List of top Physics Questions

The refractive index of glass with respect to air is 1.6. The refractive index of air w.r.t glass is:
The refractive index of glass is $1.5$ for light waves of $\lambda = 6000 \,?$ in vacuum. Its wavelength in glass is
The ratio of the speed of the electron in the ground state of hydrogen atom to the speed of light in vacuum is
The ratio of one micron to one nanometre is
The ratio of shearing stress to the shearing strain is defined as
The ratio of lateral strain to the longitudinal strain of wire is called :
The ratio of intensity at the centre of a bright fringe to the intensity at a point distant one fourth of the distance between two successive bright fringes will be
The ratio of magnitude of electrostatic force and gravitational force for an electron and a proton is
The ratio of earth?? orbital angular momentum (about the sun) to.its mass is $4.4 \times 10^{15}\, m^2/s$. The area enclosed by earths orbit approximately is (in $m^2$)
The ratio of diameters of two wires of same V material is n : 1 The length of each wire is 4m. on applying the same load, the increasing length of thin wire will be(n > 1)
The rating of fuse wire is expressed in terms of :
The r.m.s. velocity of oxygen molecule at $16^{\circ} C$ is 474 m/sec. The r.m.s. velocity in m/s of hydrogen molecule at $127^{\circ } C$ is
The radius of curvature of a thin planoconvex lens is 10 cm and the refractive index is 1.5. If the plane surface is silvered then it behaves like a concave mirror of focal length
The propagation constant of a wave is also called its
The probability of safe arrival of one ship out of five is $\left(\frac{1}{5} \right)$ . The probability of safe arrival of atleast 3 ship is:
The probability of getting at least 2 heads, when an unbiased coin is tossed 6 times is
The primary winding of a transformer has 100 turns and its secondary winding has 200 turns. The primary is connected to an A.C. supply of 120 V and the current flowing in it is 10 A. The voltage and the current in the secondary are
The pressure and density of a diatomic gas $\left(\gamma=\frac{7}{5}\right)$ change adiabatically from $\left(P, ?\right)$ to $\left(P? If $\frac{\rho'}{\rho}=32$, then $\frac{P '}{P}$ is
The power of a lens used to remove the myopic defect of eye is 0.66D: The far point of this eye is (nearly)
The potential energy of a particle $4(U_x)$ executing SHM is given by
The potential energy of a spring when stretched through a distance $x$ is $10\, J$. What is the amount of work done on the same spring to stretch it through an additional distance $x$ ?
The potential at a point P due to an electric dipole is $1.8 \times 10^5 \, V$. If P is at a distance of 50 cm apart from the centre O of the dipole and if CP makes an angle 60? with the positive side of the axial line of the dipole, what is the moment of the dipole?
The potential difference between the points $A$ and $B$ in the adjoining circuit diagram will be
The position of an object moving along $x$-axis is given by $x = a + bt^2$, where $a = 8.5 \,m$ and $b = 2.5\, m \,s^{-2}$ and $t$ is measured in seconds. The instantaneous velocity of the object at $t = 2\,s$ is
The position of the centre of mass of a cube of uniform mass density will be at