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
(a) U(x) = $1/2$kx
(b) $F_{x}(x) = –kx$
(c) $F_{x}(x) = –kx^2$
(d) U(x) =$1/2k^2x$
The correct answers to the above question in:
Answer: (b)
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
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)
Question : 2
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 : 3
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 : 4
Dimensions of impulse are
a) [MT–2]
b) [MLT2 ]
c) [MLT–1]
d) [ML–1T–3]
Answer »Answer: (c)
Impulse = force × time = MLT–2 × T = [M1LT–1].
Question : 5
Statement A :
While walking on ice, one should take small steps to avoid slipping.
Statement B :
This is because smaller steps ensure smaller friction.
a) Both statements are correct.
b) Statement B is correct.
c) Statement A is correct.
d) Both statements are incorrect.
Answer »Answer: (c)
Question : 6
Consider the following statements :
- A body can have constant velocity and still have varying speed.
- A body falls freely from a height with uniform acceleration.
a) 1 and 2 both
b) 1 only
c) 2 only
d) None
Answer »Answer: (d)
Earth is not uniform and also rotating, so the free fall acceleration g on the earth differs slightly from the gravitational acceleration ag.
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