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
![laws of motion force work energy power centre of mass question answer 35](https://careericons.com/adminicon/bunch/images/laws-of-motion-force-work-energy-power-centre-of-mass-question-answer-35.png)
(a) Power
(b) Impulse
(c) Torque
(d) Work done
The correct answers to the above question in:
Answer: (d)
Practice mechanics (mass, force, acceleration, work, energy, momentum, velocity) (set 5) Online Quiz
Discuss Form
Read more mechanics work and energy Based General Science Questions and Answers
Question : 1
In cricket match, while catching a fast moving ball, a fielder in the ground gradually pulls his hands backwards with the moving ball to reduce the velocity to zero. The act represents
a) Newton’s third law of motion
b) Newton’s second law of motion
c) Newton’s first law of motion
d) Law of conservation of energy
Answer »Answer: (b)
Question : 2
Watt–hour meter measures
a) power
b) voltage
c) current
d) electric energy
Answer »Answer: (d)
W – hr is a unit of energy.
Question : 3
The work done becomes zero if
a) force acting on the body is zero
b) displacement is zero
c) force perpendicular to the displacement
d) All of the above
Answer »Answer: (d)
Question : 4
A gymnast takes turns with her arms and legs stretched. When she pulls her arms and legs
a) the angular velocity stays constant
b) the moment of inertia decreases
c) the angular velocity decreases
d) the angular momentum increases
Answer »Answer: (b)
Since no external torque act on the gymnast, so angular momentum (L = Iw) is conserved.
After pulling her arms & legs, the angular velocity increases but the moment of inertia of gymnasts, decreases in, such a way that angular momentum remains constant.
Question : 5
It is difficult to walk on the ice than on the road because
a) Ice does not offer any reaction when we push it with our foot
b) Road is harder than the ice
c) Ice is harder than the road
d) Ice has a lesser friction than the road
Answer »Answer: (d)
Question : 6
The working principle of a washing machine is :
a) reverse osmosis
b) dialysis
c) centrifugation
d) diffusion
Answer »Answer: (c)
Verbal Reasoning
Question & Answer Quiz
Non Verbal Reasoning
Question & Answer Quiz
Quantitative Aptitude
Question & Answer Quiz
Computer MCQ
Question & Answer Quiz
General English
Question & Answer Quiz
History GK
Question & Answer Quiz
Polity GK
Question & Answer Quiz
Geography GK
Question & Answer Quiz
Economy GK
Question & Answer Quiz
General Awareness GK
Question & Answer Quiz
Recently Added Subject & Categories For All Competitive Exams
100+ Quadratic Equation Questions Answers PDF for Bank
Quadratic Equation multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams
Continue Reading »
IBPS Aptitude Linear Equations MCQ Questions Answers PDF
Linear equations multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams
Continue Reading »
New 100+ Compound Interest MCQ with Answers PDF for IBPS
Compound Interest verbal ability questions and answers solutions with PDF for IBPS RRB PO. Aptitude Objective MCQ Practice Exercises all competitive exams
Continue Reading »
100+ Mixture and Alligation MCQ Questions PDF for IBPS
Most importantly Mixture and Alligation multiple choice questions and answers with PDF for IBPS RRB PO. Aptitude MCQ Practice Exercises all Bank Exams
Continue Reading »