List of top Physics Questions

If both the length and radius of the wire are doubled, how does the modulus of elasticity change ?
If air is blow n with a straw under of the pans of a physical balance present in equilibrium position, then that pan.
If a vector $\vec{A}$ makes an angles $\alpha$, $\beta$ and $\gamma$ respectively with the $x$, $y$ and $z$ axes respectively. Then $sin^{2}\alpha+sin^{2}\beta+sin^{2}\gamma$ is equal to
If a variable frequency ac source is connected to a capacitor then with decrease in frequency the displacement current will
If a thermometer reads freezing point of water as $ 20{}^\circ C $ and boiling point as $ 150{}^\circ C $ , how much thermometer read, when the actual temperature is $ 60{}^\circ C $ ?
If a solid has a sharp melting point, then it means that the solid is :
If a particle moves in a circle describing equal angles in equal intervals of times, the velocity vector
If a man goes $10 \,m$ toward north and $20\, m$ toward east, then his displacement is
If a gas has f - degrees of freedom, the ratio $C_p/C_v$ of the gas is
If a force of 250 N act on a body, the momentum acquired is $125\,kg\,m\,s^{-1}$, what is the period for which force acts on the body ?
If a conical wire is stretched by two forces F applied, parallel to its length and In opposite direction. NoramI to end faces. The length of wire is L and its end radius are $r_1$ and $r_2$ Find out the extention produced (Given: Y=Young's modulus of wire)
If a car covers $2/5^{th}$ of the total distance with $v_1$ speed and $3/5^{th}$ distance with $v_2$ then average speed is
If a ball of $80\, kg$ mass hits an ice cube and temperature of ball is $100\,^{\circ}C$, then how much ice converted into water ? (Specific heat of ball is $0.2 \,cal \,g^{-1}$, Latent heat of ice $= 80\, cal \,g^{-1}$)
If a ball is thrown vertically upwards with a velocity of 40 m/s, then velocity of the ball after two seconds will be $(g = 10 \, m/s^2)$
If $13.6 \,eV$ energy is required to separate a hydrogen atom into a proton and an electron, then the orbital radius of electron in a hydrogen atom is
Identify the correct statement from the following:
Iceberg floats in sea water with a part of it submerged. The percentage fraction of the ice berg submerged is (Density of ice $= 0.9 \,g \,cm^{-3}$, density of sea water $= 1.1 g cm^{-3}$)
How will the diffraction pattern of single slit change when yellow light is replaced by blue light ? The fringes will be:
How much work can be obtained from 100 calories of heat energy ?
How much heat is produced by 1500 Wheater in 7 min?
How many wavelengths of $Kr^{86}$ are there in one metre ?
How does the Young's modulus vary with the increase of temperature ?
How does the isothermal bulk modulus $B_i$ depend on pressure $p$ of the gases ?
Hot wire ammeters are used for measuring
Hooke's law is valid: