set 5 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 5 EXERCISES
The following question based on mechanics (mass, force, acceleration, work, energy, momentum, velocity) topic of general science mcq
When a gun is fired it recoils, i.e., it pushes back, with much less velocity than the velocity of the bullet.
Statement B :
Velocity of the recoiling gun is less because the gun is much heavier than the bullet.
(a) Both statements are correct.
(b) Statement B is correct.
(c) Statement A is correct.
(d) Both statements are incorrect.
The correct answers to the above question in:
Answer: (c)
Practice mechanics (mass, force, acceleration, work, energy, momentum, velocity) (set 5) Online Quiz
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Read more mechanics work and energy Based General Science Questions and Answers
Question : 1
Ball bearings are used in bicycles, cars, etc., because
a) the effective area of contact between the wheel and axle is reduced
b) the effective area of contact between the wheel and axle is increased
c) the actual area of contact between the wheel and axle is increased
d) None of the above statements is correct
Answer »Answer: (a)
Question : 2
The maximum kinetic energy of a planet moving around the sun is at a position
a) C
b) B
c) A
d) D
Answer »Answer: (c)
Question : 3
In an explosion, a body breaks up into two pieces of unequal masses. In this
a) heavier part will have more momentum
b) lighter part will have more momentum
c) both parts will have numerically equal momentum
d) both parts will have equal kinetic energy
Answer »Answer: (c)
Both part will have numerically equal momentum and lighter part will have more velocity.
Question : 4
Consider the following statements : If there were no phenomenon of capillarity
- it would be difficult to use a kerosene lamp
- one would not be able to use a straw to consume a soft drink
- the blotting paper would fail to function
- the big trees that we see around would not have grown on the Earth
a) 2 and 4 only
b) 1, 2 and 3 only
c) 1, 3 and 4 only
d) 1, 2, 3 and 4
Answer »Answer: (c)
Question : 5
If suddenly the gravitational force of attraction between the earth and a satellite revolving around it becomes zero, then the satellite will
a) become stationary in its orbit
b) move tangentially to the original orbit with same speed
c) continue to move in its orbit with same speed
d) move towards the earth
Answer »Answer: (b)
Due to inertia of motion it will move tangentially to the original orbit with same velocity.
Question : 6
If the earth stops rotating about its axis, the acceleration due to gravity will remain unchanged at
a) latitutde 60°
b) latitude 45°
c) equator
d) poles
Answer »Answer: (d)
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