Motion The velocity of a bullet is reduced from 200 m/s to 100 m/s while travelling through a wooden block of thickness 10 cm. The retardation, assuming it to be uniform, will be
(1) 10 × 104
m/s2
(2) 1.2 x 104
m/s2
(3) 13.5 × 104 m/s2
(4) 15 x 104 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 : -. |
Motion What is the slope of distance-time graph when object is at rest?
(1)
Decreases continuously
(2) Zero
(3)
Increases continuously
(4)
One
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 2 Solution : -. |
Motion What is the speed of the object in the 10 second interv al from 40-50
seconds?
(1)
2 m/s
(2)
1 m/s
(3)
0.25 m/s
(4)
0.5 m/s
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 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 Velocity-time graph AB (Figure) shows that the body has-
(1) A uniform acceleration 
(2) A non uniform retardation
(3) Uniform speed
(4) Initial velocity OA and is moving with uniform retardation
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
Motion This is a velocity-time graph when the body is under:
(1) Non-uniform retardation.
(2) Uniform acceleration.
(3) Uniform retardation.
(4) Non-uniform acceleration.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Motion The velocity-time graph of an object moving in a fixed direction is shown in the figure below.
What do you conclude about the object?
(1) Moves with a constant speed.
(2) Moves with varying speeds.
(3) Moves with a non zero acceleration.
(4) Is at rest.
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 1 Solution : -. |
Motion In 10 minutes, a car with speed of 60 kmh–1
travels a distance of -
(1) 6 km
(2) 600 km
(3) 10 km
(4) 7 km
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 3 Solution : -. |
Motion A body is said to be in non-uniform motion if it travels
(1)
Equal distance in unequal interval of time
(2)
Equal distance in equal interval of time
(3)
Unequal distance in unequal interval of time
(4)
Unequal distance in equal interval of time
| A. | Option 1 |
| B. | Option 2 |
| C. | Option 3 |
| D. | Option 4 |
|
Option: 4 Solution : -. |
