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) v/2
(b) v/3
(c) v
(d) zero
The correct answers to the above question in:
Answer: (a)
Practice mechanics (mass, force, acceleration, work, energy, momentum, velocity) (set 5) Online Quiz
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Question : 1
A person is sitting in a car which is at rest. The reaction from the road at each of the four wheels of the car is R. When the car runs on a straight level road, how will the reaction at either of the front wheels vary?
a) It will be equal to R
b) It will be less than R
c) It will be greater than R
d) It shall depend on the material of the road
Answer »Answer: (b)
Question : 2
The wide handle of screw is based upon
a) turning moment of force
b) law of conservation of linear momentum
c) Newton’s second law of motion
d) None of these
Answer »Answer: (a)
Question : 3
Which one of the following statements regarding artificial satellite of the earth is incorrect ?
a) The period of revolution is large if the radius of its orbit is large
b) A minimum velocity of 8 km/sec is required by a satellite to orbit quite close to the earth
c) The orbital velocity depends on the mass of the satelllite
d) The height of a geostationary satellite is about 36000 km from earth
Answer »Answer: (c)
$V_O=√{gR}$
i.e., $v_0$ independent of the mass of the satellite.
Question : 4
If the earth rotates faster than its present speed, the weight of an object will
a) remain unchaged at the equator but decrease at the poles
b) decrease at the equator but remain unchanged at the poles
c) increase at the equator but remain unchaged at the poles
d) remain unchanged at the equator but increase at the poles
Answer »Answer: (b)
$g'=g- ω^2Rcos^2λ$
Question : 5
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 : 6
The maximum kinetic energy of a planet moving around the sun is at a position
![physics mechanics mcq question answer 48](https://careericons.com/adminicon/bunch/images/physics-mechanics-mcq-question-answer-48.png)
a) C
b) B
c) A
d) D
Answer »Answer: (c)
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