Primary :: Science
Time, Motion & Speed
Question Lot : [1 to 16]
1.
An event which occurs at regular interval of time is called
Regular
Natural
Cycle
Periodic
Answer :
Periodic
2.
In olden days, people used to measure time with the help of
Sundial
Hourglass
Candle
All of above
Answer :
All of above
3.
Sundial is made with
Triangular Metal Plate on a Circular Plate
Sun in the Dial
Circular Plate with Pyramid
None of above
Answer :
Triangular Metal Plate on a Circular Plate
4.
Who discovered that the motion of pendulum is Periodic
Christiaan Huygens
J.J. Beerzelius
Galileo Galilei
All of above
Answer :
Galileo Galilei
5.
A swinging pendulum takes a ________ time to complete an oscillation.
Variable
Irregular
Fixed
None of above
Answer :
Fixed
6.
Who invented the Pendulum Clock
Christiaan Huygens
Galileo Galilei
J.J.Berzelius
All of above
Answer :
Christiaan Huygens
7.
The time a pendulum takes to complete one oscillation is called
Time Space
Frequency
Time location
Time Period
Answer :
Time Period
8.
Number of oscillations a pendulum makes in one second is called frequency and is represented by
Frequency = 2 X Time Period
Frequency = Time Period/2
Frequency = 1/Time Period
None of Above
Answer :
Frequency = 1/Time Period
9.
The SI unit of time is represented by the symbol
T
t
s
S
Answer :
s
10.
Speed is the distance travelled in unit time & is represented by
Speed = Distance X Time
Speed = Time/Distance
Speed = Distance /Time
Speed = 2 X Distance/Time
Answer :
Speed = Distance /Time
11.
A body is said to be in motion if it changes it position with
Speed
Time
Space
None of above
Answer :
Time
12.
Distance Time graph of a body in uniform motion is always a
Circular
Straight Line
U curve
Inverted U
Answer :
Straight Line
13.
What is the speed of a car it takes 30 minutes to cover a distance of 60 km
60 km/hr
30 km/hr
120 m/hr
2 km/hr
Answer :
120 m/hr
14.
Mechanical clock use __________ & Electronic watches use __________.
Balance Wheel, Quartz Crystal
Quartz Crystal, Balance Wheel
Pendulum, Balance Wheel
Sundial, Quartz Crystal
Answer :
Balance Wheel, Quartz Crystal
15.
The SI unit of speed is
km/hr
Km
hr
minutes
Answer :
km/hr
16.
When is a moving body said to be in uniform motion, when its speed is
Variable
Constant
Irregular
All of above
Answer :
Constant
