Experimental Skills [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 20 - 23 of 175
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Question 20
Question MCQ▾
In the HCl molecule, the separation between the nuclei of the two atom is about 1.27 Å (1Å = 10-10 m) . The approximate location of the center of mass from the hydrogen atom, assuming the chlorine atom to be about 35.5 times massive as hydrogen is
Choices
Choice (4) | Response | |
---|---|---|
a. | l Å | |
b. | 2.5 Å | |
c. | 1.5 Å | |
d. | 1.24 Å |
Question 21
Question MCQ▾
2 bodies of different masses of 3 kg and 6 kg are moving with, velocities 20 m/s and 10 m/s towards each other due to mutual gravitational attraction. What is the velocity of their center of mass?
Choices
Choice (4) | Response | |
---|---|---|
a. | 6 m/s | |
b. | 8 m/s | |
c. | 5 m/s | |
d. | Zero |
Question 22
Question MCQ▾
If linear density of a rod of length 3m varies as λ = 2 + x them the position of the center of gravity of the rod is
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 23
Question MCQ▾
Choose the wrong statements about the center of mass (CM) of a system of two particles
(1) The CM lies on the line joining the two particles midway between them
(2) The CM lies on the line joining them at a point whose distance from each particle is proportional to the square of the mass of that particle
(3) The CM is on the line joining them at a point whose distance from each particle is proportional to the mass of that particle
(4) The CM lies on the line joining them at a point whose distance from each particle is inversely proportional to the mass of that particle
Select the correct answers and mark it according to the following codes:
Choices
Choice (4) | Response | |
---|---|---|
a. | 1,2 and 3 are correct | |
b. | 1 and 2 are correct | |
c. | 2 and 4 are correct | |
d. | 1 and 3 are correct |