List of top Physics Questions asked in JEE Main, KCET

Instantaneous current in a circuit is \(i(t)=[6+\sqrt54sin(2\pi + \pi/3)]\) A RMS value of current is

The equation of stationary wave is given as \(y=2A\sin(\frac{2\pi}{\lambda}\cdot nt) \cos (\frac{2\pi}{\lambda}\cdot x)\), then which of the following is not correct.

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

Assertion (A) : The contact angle depends on material of solid and liquid.
Reason (R) : Height of the liquid in a capillary tube is independent of the radius of the tube.

A metallic rod of length 4 m is rotating about perpendicular bisector of the rod with angular velocity of 2 rad/s in presence of transverse magnetic field of 0.5 T. Potential difference developed across ends of rod is

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.

The circuit diagram shown is equivalent to

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

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

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

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

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

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 body of mass 4 kg is at a height of R (radius of earth) from surface of earth. The weight of the body is ______ N.

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.

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

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.

If the time period of a pendulum at height R (Where R is radius of earth) from surface of earth is $T_1$ and at height 2R it is $T_2$, then

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

A block of mass m = 50 kg is lifted from ground to a height of 20 m in two different ways as shown in the figure. Find the ratio of work done by gravity in both the cases.

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

The correct relation between kinetic energy (K.E) and total energy (T.E) of a satellite orbiting around the planet is

Find the ratio of energy stored in the two given capacitor systems.

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

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: