NEET Physics: Questions 447 - 451 of 2098
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.
Rs. 550.00 or
Question number: 447
» Kinematics » Average Speed and Instantaneous Velocity
Question
A man is walking on a level road at a speed of 3 km/h. Raindrops fall vertically with a speed of 4 km/h. Find the velocity of raindrops with respect to the men.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 4 km/hr |
|
| b. | 7 km/hr |
|
| c. | 5 km/hr |
|
| d. | 3 km/hr |
|
Question number: 448
» Kinematics » Uniform and Non-Uniform Motion
Question
A boy standing on a weighing machine observes his weight as 100 N. When he suddenly jumps upwards, his friend notices that the reading increased to 300 N. The acceleration by which the boy jumped will be
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 3.27 m/s 2 |
|
| b. | 19.6 m/s 2 |
|
| c. | 29.4 m/s 2 |
|
| d. | 32.7 m/s 2 |
|
Question number: 449
» Electrostatics » Electric Potential
Question
Two electric charges 12 μC and -6 μ C are placed 20 cm apart in air. If there will be a point P on the line joining these charges and outside the region between them, at which the electric potential is zero, and then the distance of P from - 6μC charge is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
0.20 m |
|
| b. | 0.15 m |
|
| c. | 0.25 m |
|
| d. |
0.10 m |
|
Question number: 450
» Electrostatics » Electrostatic Potential Energy
Question
A positive charge is moved from a low potential point A to high potential point B. Then the electric potential energy of the system
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Nothing definite can be predicted |
|
| b. | Increases |
|
| c. | Decreases |
|
| d. | Will remain the same |
|
Question number: 451
» Electrostatics » Electric Field Lines
Assertion (Ꭺ)
Electric lines of force cross each other.
Reason (Ꭱ)
Electric field at a point superimpose to give one resultant electric field.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Ꭺ is true but Ꭱ is false |
|
| b. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ |
|
| c. | Both Ꭺ and Ꭱ are false |
|
| d. | Ꭺ is false but Ꭱ is true |
|