List of top Questions asked in KEAM

The magnetic moment $\mu$ associated with a charged particle carrying charge $q$ moving in a circle of radius $a$ with uniform speed $v$ is

The magnetic force acting on a charged particle carrying a charge $3 \mu C$ in a magnetic field of $5$ T acting in the $y$-direction, when the particle velocity is \[ (\hat{i} + \hat{j}) \times 10^5 { ms}^{-1} \] is

Kirchhoff’s junction rule is based on conservation of

Resistivity of a conductor increases with

When $n$ identical cells are connected in parallel, they give

In bringing a proton towards another proton, the electrostatic potential energy of the system

When a glass rod is rubbed with silk thread, it loses 1000 electrons. Then the charge on the glass rod is (electronic charge $e = 1.6 \times 10^{-19}$ C)

The velocity of a travelling plane wave given by \[ y = 10^{-2} \sin \left( 200t - \frac{x}{5} \right) m, \] is

The instantaneous displacement of a particle executing simple harmonic motion is given by $x = 2(\cos(\pi t) + \sin(\pi t))$.
The amplitude of oscillation is

The average kinetic energy per molecule of an ideal gas at $27^\circ C$ is $E$. The temperature of the gas at which the average kinetic energy per molecule will be $2E$ is

The pressure of an ideal gas is proportional to the cube of its temperature (on absolute scale) in an adiabatic process. Then the value of the ratio $C_p/C_v$ is

When water is heated from $0^\circ$C to $8^\circ$C, its volume

Two perfectly black bodies are at temperatures $ T $ and $ 2T $. The ratio between the wavelengths corresponding to maximum energy emission by the two black bodies is

When two different liquids of same mass but at two different temperatures $27^\circ C$ and $47^\circ C$ are mixed together, the resulting temperature of the mixture is $35^\circ C$. The ratio of their specific heat capacities is

The energy stored in a soap bubble of diameter 4 cm is nearly (surface tension of soap solution is 0.07 N/m)

Which of the following has the maximum Young’s modulus value?

The gravitational potential energy of a system of two bodies each of mass $m$ and distance $r$ between them is (G = gravitational constant, g = acceleration due to gravity)

The radius of gyration of a regular solid cylinder of radius $R$ about its axis is

If $P$ is the pressure at which the heart is pumping the blood and the volume of blood pumped per second is $V$, then the power of the heart is given by

When a spring of spring constant $k$ is cut into two pieces whose lengths are $l_1$ and $l_2$, then the ratio of their spring constants $k_1$ and $k_2$ is

In a ‘tug of war’ game, two persons pull each other through a massless rope. The person who wins is

A particle is describing a uniform circular motion with a certain constant speed. The INCORRECT statement is

Dimensions of the physical quantity $X$ in the equation \[ {Force} = \frac{X}{{Volume}} \] are

The mean deviation about the median for the data $3,5,9,3,8,10,7$ is ?

If the coefficients of $(5r+4)th$ term and $(r-1)th$ term in the expansion of $(1+x)^{25}$ are equal, then $r$ is