Math Class 12 New Book Chapter 5 MCQs Federal Board
Math Class 12 New Book Chapter 5 MCQs Federal Board
(i)
Which of the following quantities is a vector?
a) Charge
b) Mass
c) Momentum
d) Time
Correct option is (c)
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(ii)
Which of following is scalar quantity?
a) Displacement
b) Weight
c) Force
d) Work
Correct option is (d)
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(iii)
Which of following can be used to determine the magnitude of velocity?
a) Area under acceleration-time graph
b) Area under velocity-time graph
c) Gradient of an acceleration-time graph
d) Gradient of a velocity-time graph
Correct option is (a)
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(iv)
The winner of 400 metre race must have the greatest:
a) acceleration
b) average speed
c) instantaneous speed
d) maximum speed
Correct option is (b)
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(v)
A car travels 100 km. The journey takes two hours. The highest speed of the car is 80 km/h, and the lowest speed 40 km/h. What is the average speed for the journey?
a) 40 km/h
b) 50 km/h
c) 60 km/h
d) 120 km/h
Correct option is (b)
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(vi)
A car travels 6.0 km along a main road in 6.0 minutes. It then travels 2 km along minor road in 6.0 minutes. Which calculation of average speed for the whole journey is correct?
a) $$a)\;\frac{8.0}{12.0}=0.67\;\frac{km}{min}\\b)\;\frac{12.0}{8.0}=1.5\;\frac{km}{min}\\c)\;8.0+12.0=20\;\frac{km}{min}\\d)\;8.0\times12.0=96\;\frac{km}{min}$$
Correct option is (a)
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(vii)
Which person is experiencing an acceleration?
a) A driver of a car that is braking to stop at traffic light.
b) A passenger in a train that is stationary in a railway station.
c) A shopper in a large store ascending an escalator (moving stairs) at a uniform speed.
d) A skydiver that is falling at a constant speed towards the Earth.
Correct option is (a)
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(viii)
A child is standing on the platform of station. A train travelling at 30 m/s takes 3.0 s to pass the child. What is length of train?
a) 10 m
b) 27 m
c) 30 m
d) 90 m
Correct option is (d)
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(ix)
A heavy object is released near the surface of earth and falls freely. Air resistance can be ignored. Which statement about the acceleration of the object due to gravity is correct?
a) The acceleration depends on mass of the object.
b) The acceleration depends on volume of the object.
c) The acceleration is constant.
d) The acceleration is initially zero and increases as the object falls.
Correct option is (c)
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