set 2 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) 2.5 times
(b) 4.5 times
(c) 5.5 times
(d) 10 times
The correct answers to the above question in:
Answer: (d)
Practice mechanics (mass, force, acceleration, work, energy, momentum, velocity) (set 2) Online Quiz
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Read more mechanics work and energy Based General Science Questions and Answers
Question : 1
Force is the product of
a) Weight and velocity
b) Mass and acceleration
c) Mass and velocity
d) Weight and acceleration
Answer »Answer: (b)
Question : 2
The force exerted by the floor of an elevator on the foot of a person standing there, is more than his weight, if the elevator is
a) going up and slowing down
b) going up and speeding up
c) going down and slowing down
d) either (a) or (b)
Answer »Answer: (b)
Question : 3
Assertion (A):
A man standing on a completely frictionless surface can propel himself by whistling.
Reason (R) :
If no external force acts on a system, its momentum cannot change.
a) A is true but R is false
b) Both A and R are true but R is not a correct explanation of A
c) Both A and R are true and R is the correct explanation of A
d) A is false but R is true
Answer »Question : 4
An athlete diving off a high springboard can perform a variety of exercises in the air before entering the water below. Which one of the following parameters will remain constant during the fall?
a) The athlete’s kinetic energy
b) The athlete’s moment of inertia
c) The athlete’s linear momentum
d) The athlete’s angular momentum
Answer »Answer: (d)
Question : 5
An oil tanker is partially filled with oil and moves forward on a level road with uniform acceleration. The free surface of oil, then
a) is inclined to the horizontal with larger depth at the rear end
b) is inclined to the horizontal with smaller depth at the rear end
c) remains horizontal
d) assumes parabolic curve
Answer »Answer: (d)
Question : 6
Consider the following statements :
- The objects appear to be more heavy when submerged in water than they are in air.
- A needle place carefully on the surface of water may float, whereas a ball of the same material will always sink.
a) 1 and 2 both
b) 1 only
c) 2 only
d) None
Answer »Answer: (c)
Buoyancy is an upward force exerted by a liquid, gas or other fluid, that opposes the weight of an immersed object.
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