A body of mass 2 kg is projected from the ground with a velocity at an angle 30° with the vertical. If is the time in seconds at which the body is projected and is the time in seconds at which it reaches the ground, the change in momentum in kgms^-1 during the time is

The displacement-time graph of a moving object is shown in figure. Which of the velocite-time graphs shown in figure could represent the motion of the same body ?

For the displacement-time graph shown in figure, the ratio of the magnitudes of the speeds during the first two second and the next four second is

In the given v-t graph, the distance travelled by the body in 5 second will be

The displacement time graphs of two moving particles make angles of 30° and 45° with the x- axis The ratio of the two velocities is

An elevator is going up. The variation in the velocity of the elevator is as given in the graph. What is the height to which the elevator takes the passengers

The mid‐point of the chord of the hyperbola is

Equivalent weight of in acidic, basic and neutral media are in the ratio of

For the synthesis of ammonia by the reaction in the Haber process, the attainment of equilibrium is correctly predicted by the curve

A 10 kg wt is suspended as shown below then Tension  & are

If ' ' is in equilibrium then tensions and are

Four forces of magnitude p, 2p, 3p, 4p act along the four sides of a square ABCD in cyclic order. The magnitude of resultant is

The resultant of the three displacement vectors and is

The table given below lists the bond dissociation energy (E _diss) for single covalent bonds formed between C and atoms A, B, D and E.

Which of the atoms has smallest size?

The locus of Z which lies in shaded region is best represented by

Six faces of a unbiased die are numbered with 2, 3, 5, 7, 11 and 13. If two such dice are thrown, then the probability that the sum on the uppermost faces of the dice is an odd number is

Here we used the concept of probability to find the answer. Probability theory is an area of mathematics that examines random events. A random event's outcome cannot be predicted before it happens, although it could take any of several different forms. So the probability that the sum on the uppermost faces of the dice is an odd number is 5/18.