Which among the following is not a fundamental quantity?
Velocity
Length
Mass
Time
The regular vibrations of which of the following electrically driven crystals are used for measuring time very accurately
Calcite crystals
quadric crystals
Chrome crystals
Quartz crystals
The correct relation between speed, distance and time is
speed= distance / time
speed= time / distance
speed= distance x time
distance= speed / time
Which of the following is the most appropriate to demonstrate the runs scored in the various overs of a crocket match
Time grapf
Bar graph
Pie chart
Line graph
The composition of air can be best represented by drawing a
Histogram
The clocks and watches which are used for measuring time are based on :
Rectilinear motion
Circular motion
Periodic motion
Rotational motion
The basic unit of speed is
km/ min
m/min
km/h
m/s
Which of the following is the most appropriate unit for expressing the speed of a snail.
Km / s
m / s
cm / s
mm /s
An athlete attains a maximum speed of 36 km / h . This speed is equal to
5 m / s
10 m / s
15 m / s
20 m / s
A student draws a distance - time graph for a moving scooter and finds that a section of the graph is a horizontal line parallel to the time axis. Which of the following conclusion is correct about this section of the graph
The scooter has uniform speed in this section
The distance travelled by scooter is the maximum in this section
The distance travelled by the scooter is the minimum in the section
The distance travelled by the scooter is zero in this section
