List of top Questions asked in KCET, JIPMER

A ball hits the floor and rebounds after an inelastic collision. In this case

In figure E and V_cm represent the total energy and speed of centre of mass of an object of mass 1kg in pure rolling. The object is :

A 1 kg ball moving at 12 ms^-1 collides with a 2 kg ball moving in opposite direction at 24 ms^-1. If the coefficient of restitution is \(\frac{2}{3}\), then the velocities after the collision are

A coin placed on a rotating turn table just slips if it is placed at a distance of 4 cm from the centre. If the angular velocity of the turn table is doubled it will just slip at a distance of :

A particle starts from the origin at t = 0s with a velocity of \(10\hat{j}\) ms^-1 and move in the x-y plane with a constant acceleration of \((8\hat{i}+2\hat{j})\) ms^-2 . At an instant when the x-coordinate of the particle is 16 m, y-coordinate of the particle is:

A particle starts from rest. Its acceleration ‘a’ versus time ‘t’ is shown in the figure. The maximum speed of the particle will be:

For a body moving along a straight line, the following v-t graph is obtained.

According to the graph, the displacement during

A convex lens $'A'$ of focal length $20\, cm$ and a concave lens $'B'$ of focal length $5\, cm$ are kept along the same axis with a distance $'d'$ between them. If a parallel beam of light falling on $'A'$ leaves $'B'$ as a parallel beam, then the distance $'d'$ in cm will be :

A bacterial flagellum is composed of

Relate Column I with Column II with regard to predatory behaviour:

	Column I		Column II
1.	Calotropis	p.	Invertebrates
2.	Pisaster	q.	Distasteful
3.	Monarch butterfly	r.	Cryptically colored
4.	Frogs	s.	Cardioglycoside

When Escherichia coli cells are cultured in a medium where Lactose is absent, the 'i' gene of Lac Operon continues to produce repressor mRNA, because it is

In an Organism, mutation in a single gene exhibits multiple phenotypic expressions. Identify the underlying genetic mechanism in the above instance.

Identify the event in meiosis mediated by the enzyme recombinase.

In eukaryotes, the entire base sequence of a gene do not appear in mature RNA because

The last element of the $p$-block in $6^{th}$ period is represented by the outer most electronic configuration

A point charge 'q' is placed at the corner of a cube of side 'a' as shown in the figure. What is the electric flux through the face ABCD?

A student observes grass and Hibiscus plants in his garden during noon. To his surprise, only the leaves of grass were found rolled inwards. The reason could be

The value of $\,^{16}C_9 + \,^{16}C_{10} -\,^{16}C_6 -\,^{16}C_7$ is

The value of
¹⁶C₉ + ¹⁶C₁₀- ¹⁶C₆ - ¹⁶C₇ is

If \(\begin{pmatrix} 2 & 1 \\ 3 & 2 \\ \end{pmatrix}A=\begin{pmatrix} 1 & 0 \\ 0 & 1 \\ \end{pmatrix}\), then the matrix A is

If A = {1, 2, 3, 4, 5, 6}, then the number of subsets of A which contain atleast two elements is

If $|tan \,A + \cot \,A = 2$, then the value of $\tan^4 A + \cot^ 4 A = $

A hot filament liberates an electron with zero initial velocity. The anode potential is $1200\,V$. The speed of the electron when it strikes the anode is