Physical balance is used to measure…………of a
body.
a) weight
b) mass
c) length
d) height
There are…………..main types of stop watch.
a) 3
b) 4
c) 1
d) 2
Explanation: i) Mechanical stop watch ii) Digital stop watch
The least count of mechanical stop watch is..…
a) 0.001 s
b) 0.1 minute
c) 0.1 s
d) 0.1 hr
The least count of digital stop watch is..………
a) 0.01 s
b) 0.1 s
c) 0.001 s
d) 0.02 s
Which one is
more accurate?
a) digital stop watch
b) mechanical stop watch
c) both a & b
d) none of these
Explanation: As the least count of digital stop watch is 0.01 s and that of mechanical stop watch is 0.1s, so digital stop watch is more accurate.
The volume of a liquid can be found by a..……
a) flask
b) funnel
c) measuring cylinder
d) meter rod
