List of top Questions asked in KEAM

When \(n\) identical cells are connected in parallel, they give
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)
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
The number of windings in the primary and secondary of a transformer are 100 and 2000 respectively. If 50 V a.c is applied to the primary, the potential difference across the secondary is
The correct electronic configuration of Uranium (Z=92) is

The following results were obtained in the gas phase reaction between nitric oxide and oxygen at a given temperature.

Which of the following is an example of pseudo first order reaction?
A parallel plate capacitor with a dielectric medium of dielectric constant 1.5 has a capacitance of \(C\). If the dielectric is removed, then the capacitance of the capacitor becomes
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
A projectile is given an initial velocity of $(\hat{i} + \hat{j})$ m/s, where $\hat{i}$ is along the ground and $\hat{j}$ is along the vertical direction. The equation of its trajectory is $(g = 10 \, \text{m/s}^2)$.
Which of the following has the maximum Young’s modulus value?
The photoelectric work function for a photosensitive material is 5.2 eV. The energy of the incident radiation for which the stopping potential is 6 V is
The radius of gyration of a regular solid cylinder of radius $R$ about its axis is

If the speed of a moving particle is decreased by 1%, the de Broglie wavelength of the wave associated with it

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 velocity of a travelling plane wave given by \[ y = 10^{-2} \sin \left( 200t - \frac{x}{5} \right) m, \] is
In the measurement of length 6 $\mu$m is equal to $x$ pm. Then the value of $x$ is
Dimensions of the physical quantity $X$ in the equation \[ {Force} = \frac{X}{{Volume}} \] are
Kirchhoff’s junction rule is based on conservation of
The number of significant figures in 0.0500L is
A particle moves under the influence of a force in the XY-plane such that the components of its linear momentum $\vec{p}$ at any time $t$ are given by $p_x = p \sin t$ and $p_y = p \cos t$. The angle between $\vec{F}$ and $\vec{p}$ at that time is
In bringing a proton towards another proton, the electrostatic potential energy of the system

A particular color of light has a wavelength of 663 nm. What is the energy possessed by the light? 
(Planck’s constant $h = 6.63 \times 10^{-34}$ J·s; Velocity of light $c = 3 \times 10^8$ m/s)

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