Kinematics [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 187 - 190 of 475
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Question 187
Question Assertion-Reason▾
Assertion(Ꭺ)
In figure the ground is smooth and the masses of both the blocks are different. Net force acting on each of block is not same.
Reason(Ꭱ)
Acceleration of the both blocks will be different.
Choices
Choice (4) | Response | |
---|---|---|
a. | Both Ꭺ and Ꭱ are false | |
b. | Ꭺ is true but Ꭱ is false | |
c. | Ꭺ is false but Ꭱ is true | |
d. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ |
Question 188
Question MCQ▾
A 20 g bullet pierces through a plate of mass m1 = 1 kg and then comes to rest inside a second plate of mass n1 = 2.98 kg. It is found that the two plates, initially at rest, now move with equal velocities. The percentage loss in the initial velocity of bullet when it is between m1 and m2. (Neglect any loss of material of the bodies, due to action of bullet.) will be -
Choices
Choice (4) | Response | |
---|---|---|
a. | 25% | |
b. | 45% | |
c. | 30% | |
d. | 20% |
Question 189
Question MCQ▾
An automobile of mass m accelerates from rest If the engine supplies a constant power P, the velocity at time t is given by –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 190
Question MCQ▾
A particle of mass m is moving in a horizontal circle of radius r, under a centripetal force equal to (-k/r2) , where k is a constant. The total energy of the particle is –
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |