Kinematics-Motion in a Straight Line [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 42 - 47 of 65
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Passage
A particle moves along x-axis and its acceleration at any time t is a = 2 sin (πt) , where t is in seconds and a is in m/s2 . The initial velocity of particle (at time t = 0) is u = 0.
Question 42 (2 of 3 Based on Passage)
Question MCQ▾
The distance travelled (in meters) by the particle from time t = 0 to t = t will be –
Choices
Choice (4) | Response | |
---|---|---|
a. | - + | |
b. | ||
c. | - | |
d. | All of the above |
Question 43 (3 of 3 Based on Passage)
Question MCQ▾
The magnitude of displacement (in meters) by the particle from time t = 0 to t = t will be –
Choices
Choice (4) | Response | |
---|---|---|
a. | - | |
b. | - + | |
c. | ||
d. | All of the above |
Question 44
Question MCQ▾
A motor car is travelling at 30 m/s on a circular road of radius 500 m. It is increasing its speed at the rate of 2 m/s2 . Its net acceleration is (in m/s2) –
Choices
Choice (4) | Response | |
---|---|---|
a. | 1.8 | |
b. | 2 | |
c. | 2.7 | |
d. | 0 |
Question 45
Question MCQ▾
A motor car is travelling at 50 m/s on a circular road of radius 600 m. It is increasing its speed at the rate of 4 m/s2 . Its net acceleration is (in m/s2) –
Choices
Choice (4) | Response | |
---|---|---|
a. | 4.8 | |
b. | 0 | |
c. | 2 | |
d. | 5.7 |
Question 46
Question MCQ▾
If t1 be the time taken by a body to clear the top of a building and be the time spent in air, then t2: t1 will be -
Choices
Choice (4) | Response | |
---|---|---|
a. | 1: 4 | |
b. | 1: 2 | |
c. | 2: 1 | |
d. | 1: 1 |
Question 47
Question Assertion-Reason▾
Assertion(Ꭺ)
A cyclist is cycling on rough horizontal circular track with increasing speed. Then the frictional force on cycle is always directed towards center of the circular track.
Reason(Ꭱ)
For a particle moving in a circle, radial component of net force should be directed towards center. You have to select the correct choice.
Choices
Choice (4) | Response | |
---|---|---|
a. | Both Ꭺ and Ꭱ are false | |
b. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |
c. | Ꭺ is false but Ꭱ is true | |
d. | Ꭺ is true but Ꭱ is false |