List of top Questions asked in KEAM

A toy car of mass 80g is maintained to move in a horizontal circle of radius 0.8m with a velocity v ms-1. If the centripetal force acting on it is 10 N, then the value of v in ms-1 is
In a tug of war, two opposite teams pull the rope with an equal and opposite force of 20 kN at each end of the rope. If the equilibrium condition exists in the rope, the tension in it is
Which one of the following is the correct statement?
Work- energy theorem in an integral form of
Two bodies of masses m and 4m have kinetic energies in the ratio 1: 2. Their momenta p1 and p2 are in the ratio
Which one of the following is not a contact force?
In projectile motion, the physical quantity that remains invariant throughout is
The angle made by \(\overrightarrow{r}=3\overrightarrow{i}+3\overrightarrow{j}\) with the x axis is
A cyclist starting from rest moves with uniform acceleration and covers 120m in 10s. Then his acceleration in ms-2 is
The final result of the sum of the numbers 523.32, 1.21524 and 107.3 rounded to correct significant figures is
The technonlogy related with the Bernoulli's principle is used in
The dimensional formula for the power of a lens is
If one cell is connected wrongly in a series combination of four cells each of e.m.f. 1.5 V and internal resistance of 0.5 Ω, then the equivalent internal resistance of the combination is
A carbon resistor is marked with the rings coloured blue, black, rcd and silver. lts rcsistance in ohm is
The number of ways a committee of 3 women and 5 men can be formed from a panel of 8 men and 5 women is
If p and q are positive integers such that \(^{p+q}P_2=42\ and\ ^{p-q}P_2=20\), then the values of p and q respectively
A cooking gas contains carbon and hydrogen only. A volume of 11.2 L of this gas is found to weigh 22 g at STP. Then the molecular formula of the gas is
The radius of a circular plate is 1.05 m. Its area (in $m^2$) up to correct significant figures is
For any two positive rational numbers m and n, a binary operation * is defined by \(m*n=\frac{m+n}{3}\), then \(\frac{7}{2}*\frac{5}{2}\) is equal to
Let A and B be subsets of the universal set U. If n(A) = 24 , n (A∩B)=8 and n(U) = 63, then n( A'∪B') is equal to
Two materials A and B having respective work functions 3 eV and 4 eV are emitting photoelectrons of same maximum kinetic energy of 1eV. If the wavelength of incident light on A is 500 nm, then that of light incident on B is
A transistor amplifier along with a tank circuit with positive feedback will act as
In p-type semiconductors
If the mass numbers of two nuclei are in the ratio 3: 2, then the ratio of their nuclear densities is :
The ratio of the total energy E of the electron to its kinetic energy K in hydrogen atom is