Laws of Motion (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 1 - 4 of 116
Access detailed explanations (illustrated with images and videos) to 2247 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.
Rs. 550.00 or
How to register?
Question number: 1
» Laws of Motion » Centripetal Force
Question
A body of mass 0.2 kg is moving on circular path of diameter 2.0 m at the rate of 10 revolutions per 31.4 seconds. The centripetal force acting on the body is -
Choices
Choice (4) | Response | |
---|---|---|
a. | 0.4 N |
|
b. | 2N |
|
c. | 4N |
|
d. | 0.8 N |
|
Question number: 2
» Laws of Motion » Centripetal Force
Question
A body of mass 0.1 kg is moving on circular path of diameter 1.0 m at the rate of 10 revolutions per 31.4 seconds. The centripetal force acting on the body is -
Choices
Choice (4) | Response | |
---|---|---|
a. | 2N |
|
b. | 4N |
|
c. | 0.2 N |
|
d. | 0.4 N |
|
Question number: 3
» Laws of Motion » Centripetal Force
Question
Assertion (Ꭺ)
If net force F acting on a system is changing in direction only, the linear momentum (p) of system changes in direction.
Reason (Ꭱ)
In case of uniform circular motion, magnitude of linear momentum is constant but direction of centripetal force changes at every instant. You have to select the correct choice.
Choices
Choice (4) | Response | |
---|---|---|
a. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ |
|
b. | Both Ꭺ and Ꭱ are false |
|
c. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ |
|
d. | Ꭺ is false but Ꭱ is true |
|
Question number: 4
» Laws of Motion » Centripetal Force
Question
An electron is moving in a circular orbit of radius 5.3 x 10 -11 metre around the atomic nucleus at a rate of 6.6 x 1015 revolutions per second. The centripetal force acting on the electron will be -
(The mass of the electron is 9.1 x 10 - 31kg)
Choices
Choice (4) | Response | |
---|---|---|
a. |
|
|
b. |
|
|
c. |
|
|
d. |
|
|