List of top Questions asked in KEAM

An effective power of a combination of 5 identical convex lens having focal length f= 20 cm is

The work function for a metal having threshold frequency $5\times 10^7\text{ Hz}$ is?

A body of mass 'm' is acted upon by two perpendicular forces 4N and 3N. Find mass 'm' if acceleration of a body is $2\text{ m/s}^2$

A ball falls from a height of 20 m, and then bounces back up to 17 m height. The loss of energy is

If orbital radius of geostationary satellite decreases, gravitational potential energy

If $x^{22}$ is in the $(r + 1)^{\text{th}}$ term of the binomial expansion of $(3x^3 - x^2)^9$, then the value of $r$ is equal to

A set contains 9 elements. Then the number of subsets of the set which contains at most 4 elements is:

The foci of a hyperbola are (8,3) and (0,3) and eccentricity is $4/3$. Then the length of the transverse axis is:

The end-points of a diameter of a circle are (−1,4) and (5,4). Then the equation of the circle is

If fundamental frequency of an open pipe is 200 Hz, then find the fundamental frequency if one end is closed.

Which of the following is incorrect

The equation of perpendicular bisector of the line segment joining the points (10, 0) and (0, -4) is

If $a y = x + b$ is the equation of the line passing through the points (-5, -2) and (4, 7), then the value of $2a + b$ is equal to:

Which of the following is an electron donating group?

The average oxidation state of sulphur in the tetrathionate ion is:

Which of the following is a Lewis acid?

Which one of the following is the correct relation between $C_p$ and $C_V$ for one mole of an ideal gas? (R is molar gas constant)

An odd electron molecule among the following is (2015)

Among the following, the molecule that will have the highest dipole moment is:

The resistors $R_1 = 3\Omega$ and $R_2 = 1\Omega$ are connected in parallel to a 20 V battery. Find the heat developed in the resistor $R_1$ in one minute.

When a magnetic field is applied on a stationary electron, it

When the displacement of a particle executing simple harmonic motion is half its amplitude, the ratio of its kinetic energy to potential energy is:

The pressure on an object of bulk modulus $B$ undergoing hydraulic compression due to a stress exerted by surrounding fluid having volume strain $\frac{\Delta V}{V}$ is:

For most of the materials, Young’s modulus (Y) and rigidity modulus (G) are related as

The time period of an earth’s satellite revolving at a height of 35,800 km is