CBSE Questions for Class 7 Physics Motion And Time Quiz 4 - MCQExams.com

Odometer is to mileage as compass is to
  • speed
  • hiking
  • needle
  • direction
Which of the following is time measuring device in modern India?
The odometer of a car reads $$57321.0 km$$ when the clock shows the time $$08:30$$ AM. What is the distance moved by the car, if at $$08:50 AM$$, the odometer reading has changed to $$57336.0 km$$?
  • $$75\ km$$
  • $$50\ km$$
  • $$15\ km$$
  • $$10\ km$$
What is the distance traveled by the body during the first 100 seconds?
637637_c447b5a5d5594a0a959fd69582b9457f.PNG
  • 200 m
  • 50 m
  • 100 m
  • 25 m
Which of the following is/are correct regarding uniform and non-uniform motion?
  • For the body to be in the uniform motion, it must be moving in the straight line path
  • The slope of displacement-time graph for uniform motion is constant and gives constant velocity
  • A car coming to a halt is an example of non-uniform motion
  • All of the above
Which of the following is/are good example(s) of non-uniform motion?
  • When an object is moving in a circular path with uniform speed
  • A car is travelling in an overcrowded zigzag road
  • Motion of a pendulum
  • Both B and C
Which of the following instrument have very high level of accuracy ?
  • Electronic stopwatch
  • Stop clock
  • Pendulum clock
  • Hour glass
Which is in uniform motion from the following?
  • The motion of Cristiano Ronaldo in the field
  • The motion of Usain Bolt in the race track
  • The motion of earth around the sun
  • Freely falling body
Which of the following distance-time graphs shows a truck moving with speed which is not constant ?
Which of the following is used for measuring time ?
  • Fitbit
  • Playstation
  • Oculus Rift
  • LASER
In the given distance-time graph, what is the time corresponding to $$3 \ km$$ ?
637203_d4ed69a35b5e42b6a71009c5f5fe33fc.png
  • $$1 \ min$$
  • $$2 \ min$$
  • $$3 \ min$$
  • $$4 \ min$$
A scooterist covers a distance of 3 km in 5 minutes. He travels with a speed of
  • $$100 m s^{-1}$$
  • $$360 km h^{-1}$$
  • $$100 cm s^{-1}$$
  • $$600 m min^{-1}$$
The earliest clocks made by Egyptians in year 800 BC for measuring time was :
  • sundial
  • compass
  • stop watch
  • pendulum clock
$$I$$. A train runs from New Delhi to Hyderabad. It covers first distance of 240 km in 7 hrs. and nest distance of 360 km in 6 hrs.
$$II$$. Gopi takes part in a car race. He drive a distance of 70 km each in the first, second and third hours.
Which of the following statements is true.
  • $$I$$, is an example uniform motion and $$II$$ is an example of non-uniform motion.
  • $$I$$ is an example of non-uniform motion and $$II$$ is an example of uniform motion.
  • $$I$$ and $$II$$ are examples of uniform motion.
  • $$I$$ and $$II$$ are example of non-uniform motion.
Match the columns and select the correct option from the codes given below. 
Column-IColumn-II
(a)Days (i)Second 
(b)Months (ii)m/s
(c)Time(iii)Metre
(d)Speed(iv)The time from one sunrise to the next
(e)Distance(v)One new moon to the next.
a    b    c    d    e
  • (v) (i) (ii) (iii) (iv)
  • (iv) (v) (i) (ii) (iii)
  • (ii) (iii) (iv) (v) (i)
  • (i) (ii) (iii) (iv)
$$150\ m$$ long train takes $$10\ s$$ to pass a man who is going in the same direction at the speed of $$2\ kmph$$. What is the speed of the train?
  • $$52\ kmph$$
  • $$56\ kmph$$ 
  • $$84\ kmph$$ 
  • Data inadequate
Which of the following is not a unit of speed? 
  • Meter/second
  • Second/meter
  • Kilometer/hour
  • Meter/minute.
Speedometer of a car measures
  • average speed
  • average velocity
  • instantaneous speed
  • instantaneous velocity
In order to measure very short intervals, we mostly use :
  • stop clocks
  • stop watches
  • wall clocks
  • A and B
What determine the nature of the path followed by the particle 
  • Speed
  • Velocity
  • Acceleration
  • None
A scooterist travels at 30 km/h along straight path for 20 min. What is distance?
  • 1.5 km
  • 6 km
  • 10 km
  • 90 km
Speedometer measures the speed of the car in 
  • m $$s^{-1}$$
  • km $$h^{-1}$$
  • cm $$s^{-1}$$
  • km $$min^{-1}$$
A car covers a distance of $$2 \ km$$ in $$2.5$$ minutes. If it covers half of the distance with speed $$40 \ km/hr$$, the rest distance it shall cover with a speed of:
  • $$56 \ km/hr$$
  • $$60 \ km/hr$$
  • $$48 \ km/hr$$
  • $$50 \ km/hr$$
Which of the following physical quantities has same unit in all the three system of units?
  • Mass
  • Length
  • Time
  • None of these
Rajdhini express moves at a speed of $$150\ km/h$$. How long will it take to cover a distance of $$15\ km$$?
  • $$0.1\ h$$
  • $$1.125\ h$$
  • $$2.125\ h$$
  • $$3.125\ h$$
A $$350\,m$$ long train passes over a $$250\,m$$ long bridge at a speed of $$54\,km/h$$. How long will it takes to cross the bridge?  
  • $$40\,minutes$$
  • $$2/3\,minutes$$
  • $$2/3\,hr$$
  • $$1/90 s$$
If we denote speed by $$S$$, distance by $$D$$ and time by $$T$$ the relationship these equation is? 
  • $$S= D \times T $$
  • $$T= \frac {S}{D}$$
  • $$S = \frac {1}{T} \times D$$
  • $$ S= \frac {T}{D}$$
Which one of the following can not be used for measurement of time ?
  • A leaking tap
  • Single pendulum
  • Shadow of an object during the day
  • Blinking of eyes
Which of the following time measuring device is most precise?
  • A wall clock
  • A stop watch
  • A digital watch
  • An atomic clock
A bus travels 54 km in 90 minutes. The speed of the bus is?
  • 0.6m/s
  • 10m/s
  • 5.4m/s
  • 3.6 m/s
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