Motion A boy throws a ball up and catches it when the ball falls back. In which part
of the motion the ball is accelerating?
(1)
During downward motion
(2)
When the ball comes to rest
(3)
During upward motion
(4)
When the boy catches the ball
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Motion In 12 minutes a car whose speed is 35 kmh–1
travels a distance of -
(1) 7 km
(2) 3.5 km
(3) 14 km
(4) 28 km
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Motion The ratio of the heights from which two bodies are dropped is 3:5
respectively. The ratio of their final velocities is:
(1) 9 : 25
(2) √ 3 : √ 5
(3) 5 : 3
(4) √5 : √3
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Motion The velocity time graph of runner is given in the graph. What is the total
distance covered by the runner in 16s?
(1) 100 m
(2) 70 m
(3) 30 m
(4) 130 m
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Motion A body of mass 2 kg is free to move along x-axis. It is at rest at t = 0.
From t = 0 onwards it is subjected to a time dependent force F(t ) in
x-direction. The variation of F with time is as shown :
The change in momentum during journey is (in N-s) :
(1) 4.50
(2) 7.50
(3) 5.06
(4) 14.06
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Motion The velocity-time graph of a body moving in a straight line is shown in figure. The displacement and distance travelled by
the body in 6 second are respectively-
(1) 8m , 16m
(2) 16m, 8m
(3) 16m, 16m
(4) 8m, 8m
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Motion What is true about scalar quantities ?
(1) Scalars quantities have direction also.
(2) Scalars can be added arithmetically.
(3) There are special laws for scalar addition.
(4) Scalars have special method to represent.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Motion The velocity-time graph AC of a moving particle is shown in the figure
below. The acceleration of the particle is:
(1) 5 m/s2
(2) 10 m/s2
(3) 20 m/s2
(4) 2.5 m/s2
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Motion The brakes applied to a car produce a negative acceleration of 6ms–2
If the car stops after 2 seconds, the initial velocity of the car is -
(1) 6 ms–1
(2) 12 ms–1
(3) 24 ms–1
(4) Zero
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
