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) 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
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
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 : 2
A man jumped at a speed of 5 metre per second from a stationary boat and the boat moved off with the speed of 0.5 metre per second. How many times is the mass of the boat greater than that of the man?
a) 2.5 times
b) 4.5 times
c) 5.5 times
d) 10 times
Answer »Answer: (d)
Question : 3
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 : 4
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.
Question : 5
The potential energy is always the same for an object with the same
a) Acceleration
b) Speed
c) Velocity
d) Position
Answer »Answer: (d)
Question : 6
The circular motion of a particle with constant speed is
a) periodic and simple harmonic
b) periodic but not simple harmonic
c) simple harmonic but not periodic
d) neither periodic nor simple harmonic
Answer »Answer: (b)
In the circular motion of a particle with constant speed, the particle repeats its motion after a regular interval of time but does not oscillate about a fixed point.
So, the motion of particles is periodic but not simple harmonic.
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