List of top Physics Questions

Match the column. [Given: mass of sun = $M_s$ | mass of earth = $M_e$ | Radius of earth = R | Distance between the Sun and the Earth = a]

List-I		List-II
(A)	Kinetic energy of Earth	(I)	$-\frac{GM_sM_e}{a}$
(B)	Potential energy of Earth and Sun	(II)	$\frac{GM_sM_e}{2a}$
(C)	Total energy of Earth and Sun	(III)	$\frac{GM_e}{ R}$
(D)	Escape energy from surface of Earth per unit mass	(IV)	$\frac{GM_sM_e}{2a}$

Choose the correct answer from the options given below:

In YDSE for wavelength $λ = 5000 A$ , slit distance $d = 3 mm$ and screen distance of $2 m$, the intensity at a point which is $3 cm$ away from central maxima (assume intensity of light for each source is $I_0$) is $xl_0$ then x is

Three helium atoms from carbon at high temperature due to fusion. Masses of helium and carbon nuclei a.m.u are 4.0002 and 12 respectively . Find energy released in the process

Find the current I in the given circuit

Two concentric conducting rings of radius a and b are placed as shown in diagram (a < < b). Find coefficient of mutual inductance of rings

Find dimension of \(\sqrt{G}\).𝞵, where G is universal gravitational constant and 𝞵 is energy gradient

The ratio of radius of gyration of uniform hollow sphere and uniform solid sphere about its diameter is _______ (both have the same radius)

The maximum amplitude of an amplitude-modulated wave is found to be 15V while its minimum amplitude is found to be 3V. The modulation index is:

Eight drops of water, each of radius $ 2 \,mm $ are falling through air at a terminal velocity of $ 8\, cm \,s^{-1} $ . If they coalesce to form a single drop, then the terminal velocity of combined drop will be

Liquid will rise in capillary tube if angle of contact is

The compressibility of water is $ 6\times {{10}^{-10}}{{N}^{-1}}{{m}^{2}} $ . If one litre is subjected to a pressure of $ 4\times {{10}^{7}}N{{m}^{-2}}, $ the decrease in its volume is

The phase change between incident and reflected sound wave from a fixed wall is

Because of force (separately) of 3 N & 2 N, elongation in spring are found to be 'a' and 'b' unit respectively then (2a -3b) is.

For methane, translation degrees of freedom is $f_1$ while rotational degrees of freedom is $f_2$ . Find $f_1$ + $f_2$ .

A bar magnet of magnetic moment M = 0.5A m2 is under the influence of a magnetic field 8 T. Find the work done (J) to move the magnet from stable to unstable equilibrium position.

Two point mass m and 2m are on straight line. If mass m moves toward centre of mass by distance 2 cm, then the distance must mass 2m should move so that centre of mass does not change ______ cm.

A heater of rating of 50 W – 200 V is connected with source voltage of 100 V. Power consumed by heater is

Which of the following circuits would have the diode in conducting state?

With regard to gravitation parameters, the dimensions of $T^2$ are same as that of

Wavelengths assigned to gamma rays, infra-red rays, UV rays and microwaves are 1 , 2 , 3 & 4 respectively. Then :

The width of the one slit in YDSE is four times the other slit. Then ratio of maximum to the minimum intensity at screen is

The circuit diagram shown is equivalent to

Statement 1 : In photoelectric effect, number of photoelectrons emitted are proportional to frequency of incident light.
Statement 2 : Maximum kinetic energy of photoelectrons is proportional to frequency of incident light.

Correct match for phasors of voltage and current for given elements is
a. Inductive
b. Capacitive
C. Resistive

One mole of an ideal monatomic gas compressed adiabatically from volume 2 V to V . If initially temperature of gas was T then the magnitude of work done in this process is