List of top Physics Questions

The value of P so that the vectors $2 \hat i - \hat j + \hat k, \hat i + 2 \hat j - 3 \hat k$ and $3 \hat i + P \hat j + 5 \hat k$ are coplanar should be
The value of horizontal component of earths magnetic field at a place is $0.35\times10^{-4}$ tesla. If the angle of dip is $60^0$, the value of vertical component of earths magnetic field is about :
The value of g on earth's surface is $980\,cms^{-2}$. The value at a height of 64 km from surface of earth is
The value of angle of dip is zero at the magnetic equator because on it
The unit of the quantity g/G in SI will be
The unit of thermal conductance is
The unit of potential energy is
The unit of permittivity is same as that of
The unit of pole strength is :
The unit of inductance is equivalent to
The unit of electric dipole moment is
The unit of electric dipole moment is :
The two femurs each of cross-sectional area $10 \,cm^{2}$ support the upper part of a human body of mass $40\, kg$. The average pressure sustained by the femurs is $(Take\, g = 10\, m\, s^{-2})$
The true value of angle of dip at a place is $60^\circ$, the apparent dip in a plane inclined at an angle of $30^{\circ}$ with magnetic meridian is
The truthfulness or falsity of a statement is called its
The transistor provide good power amplification when they are used in
The torque on an electric dipole of moment $p$ when placed in electric field $\epsilon$ is proportional to :
The time period of revolution of geostationary satellite with respect to earth is
The time period of a simple pendulum on the surface of the earth is $4 \,s$. Its time period on the surface of the moon is
The term inertia was first used by
The temperature of the gas consisting of rigid diatomic molecules is T = 300K. Calculate the angular root mean square velocity of a rotating moelcule if its moment of inertia is equal to $I = 2 .1 \times 10^{-39} g\,cm^2$.
The temperature of a substance increases by $27^{\circ} \, C$. On the Kelvin scale this increase is equal to
The temperature coefficient of resistivity of semiconductors is
The temperature at which the average speed ofthe gas molecules is double to that at atemperature of 27 $^\circ$C is
The sun subtends an angle of $\left(\frac{1}{2}\right)^\circ$ on earth. The image of sun is obtained on the screen with help of a convex lens of focal length 100 cm the diameter of the image obtained on the screen will be