NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics: Questions 879 - 884 of 5119
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Question 879
Question MCQ▾
In the figure shown, the velocity of each particle at the end of 4 sec will be -
Choices
Choice (4) | Response | |
---|---|---|
a. | 0.872 m/s | |
b. | 2.18 m/s | |
c. | 8.72 m/s | |
d. | 0.218 m/s |
Question 880
Question MCQ▾
Find the maximum value of M/m in the situation shown in figure so that the system remains at rest. Friction coefficient at both the contacts is u.
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Passage
Read the passage given below and answer the questions that follows: A block of mass 1 kg is placed on a rough horizontal surface. A spring is attached to the block whose other end is joined to a rigid wall, as shown in the figure. A horizontal force is applied on the block so that it remains at rest while the spring is elongated by x.
Let Fmax and Fmin be the maximum and minimum values of force F for which the block remains a equilibrium. For a particular x,
Fmax - Fmin = 2N
Also shown is the variation of Fmax + Fmin versus x, the elongation of the spring.
Question 881 (1 of 3 Based on Passage)
Question MCQ▾
The coefficient of friction between the block and the horizontal surface is -
Choices
Choice (4) | Response | |
---|---|---|
a. | 0.3 | |
b. | 0.1 | |
c. | 0.2 | |
d. | 0.4 |
Question 882 (2 of 3 Based on Passage)
Question MCQ▾
The spring constant of the spring is -
Choices
Choice (4) | Response | |
---|---|---|
a. | 25 N/m | |
b. | 50 N/m | |
c. | 20 N/m | |
d. | 2.5 N/m |
Question 883 (3 of 3 Based on Passage)
Question 884
Question MCQ▾
A block is placed on a rough floor and a horizontal force F is applied on it. The force of friction f by the floor on the block is measured for different values of F and a graph is plotted between them –
(1) The graph is a straight line of slope 45°
(2) The graph is straight line parallel to the F axis
(3) The graph is a straight line of slope 45° for small F and a straight line parallel to the F-axis for large F.
(4) There is small kink on the graph
Which of the following options are correct?
Choices
Choice (4) | Response | |
---|---|---|
a. | 1 and 4 | |
b. | 1 and 3 | |
c. | 1 and 2 | |
d. | 3 and 4 |