List of top Physics Questions

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 coefficient of resistivity of semiconductors is
The temperature of a substance increases by $27^{\circ} \, C$. On the Kelvin scale this increase is equal to
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
The suns angular diameter is measured to be $1920$". The distance of the sun from the earth is $1.496 \times 10^{11}\, m$. What is the diameter of the sun ?
The slope of velocity-time graph for motion with uniform velocity is equal to
The slits in Young?? double slit experiment are illuminated by light of wavelength $6000 ?$. If the path difference at the central bright fringe is zero, what is the path difference for light from the slits at the fourth bright fringe?
The $SI$ unit of pressure gradient is
The SI unit of magnetic permeability is
The shortest wavelength of the Brackett series of a hydrogen like atom (atomic number =Z) is the same as the shortest wavelength of the Balmar series of hydrogen atom. The value of Z is
The shortest wavelength in the Balmer series is $(R = 1.097 \times 10^7 \,m^{-1})$
The self inductance $L$ of a solenoid of length $l$ and area of cross-section $A$, with a fixed number of turns $N$ increases as
The self inductance of an inductor coil having $100$ turns is $20\, mH$. The magnetic flux through the cross-section of the coil corresponding to a current of $4 \,mA$ is
The satellite of mass m revolving in a circular orbit of radius r around the earth has kinetic energy E. Then its angular momentum will be
The root mean square velocity, $v_{rms}$ , the average velocity $v_{av}$ and the most probable velocity,$v_{mp}$ of the molecules of the gas are in the order:
The root mean square speed of gas molecules
The role of inductance is equivalent to :