Q: Which of the following does not express a time interval?

The correct answer is option (d) Time of the first bell in the school.

Q: How much time does the bob of a seconds pendulum take to move from one extreme to the other extreme of its oscillation ?

Time period of second's pendulum is 2s hence the time taken from one extreme to another is half of the time period. \dfrac{2}{2} = 1 s

Q: Which one of the following can not be used for measurement of time ?

"A leaking tap" is the answer because we cannot estimate when will the drop fall.where as⇒ simple pendulum shows time by its to and fro motion.⇒ in olden days the time is estimated by the shadow of an object⇒ blinking of eyes is rarely seen which blinks by time unless by reflex actions

Q: Which of the following instrument have very high level of accuracy ?

Electronic stopwatch, stop clock, pendulum clock and hour glass are the instruments used for measuring the time. Among the following, electronic stopwatch has the highest level of accuracy whereas hourglass has the lowest level of accuracy in measuring time.

Q: Interval between two events is called

Interval between two events is known as Duration. For example : A work start at 10 AM and it ends 12 AM. Duration of work will be 2 hr.

Q: A simple pendulum is set into vibrations. The bob of the pendulum comes to rest after some time due to

Air friction causes the oscillating pendulum to damp and thus eventually it comes to rest after some time.

Q: Which of the following physical quantities has same unit in all the three system of units?

LENGTH MASS TIME M.K.S Meter killogram sec C.G.S Centi meter gram sec S.I. meter killogram sec The unit of time (i.e. second) is the same in all the three systems of units.

Q: How do you measure the time period of a given pendulum? Why do you note the time for more than one oscillation ?

Time period is the time taken by the body to complete one oscillation and it is noted more than once to get accurate reading from averaging of all the observed values.

Q: Which of the following is not a unit of time?

Here, hour, nano second and microsecond are all the unit of time. 1 hour =3600 second, one nano second =10^{9} second, one microsecond =10^{-6} secondLight year is the unit of astronomical distance and it is equivalent to distance traveled by light in one year.

Question 1

When a simple pendulum is taken from the Equator to the Pole, its period of oscillation will :

Accepted Answer

Time period of simple pendulum is given by    T =2\pi\sqrt{\dfrac{l}{g}} where   l  is the length of the pendulum and  g  is the acceleration due to gravity.We know that  g_{pole}> g_{equator} \implies \ T_{pole}<T_{equator} Thus time period of simple pendulum decreases when it is taken from equator to pole.

Question 2

Which of the following does not express a time interval?

Accepted Answer

The correct answer is option (d) Time of the first bell in the school.

Question 3

How much time does the bob of a seconds pendulum take to move from one extreme to the other extreme of its oscillation ?

Accepted Answer

Time period of second's pendulum is 2s hence the time taken from one extreme to another is half of the time period. \dfrac{2}{2} = 1  s

Question 4

Which one of the following can not be used for measurement of time ?

Accepted Answer

"A leaking tap" is the answer because we cannot estimate when will the drop fall.where as⇒ simple pendulum shows time by its to and fro motion.⇒ in olden days  the time is estimated by the shadow of an object⇒ blinking of eyes is rarely seen which blinks by time unless by reflex actions

Question 5

Which of the following instrument have very high level of accuracy ?

Accepted Answer

Electronic stopwatch, stop clock, pendulum clock and hour glass are the instruments used for measuring the time. Among the following, electronic stopwatch has the highest level of accuracy whereas hourglass has the lowest level of accuracy in measuring time.

Question 6

Interval between two events is called

Accepted Answer

Interval between two events is known as Duration. For example : A work start at 10 AM and it ends  12 AM. Duration of work will be 2 hr.

Question 7

A simple pendulum is set into vibrations. The bob of the pendulum comes to rest after some time due to

Accepted Answer

Air friction causes the oscillating pendulum to damp and thus eventually it comes to rest after some time.

Question 8

Which of the following physical quantities has same unit in all the three system of units?

Accepted Answer

LENGTH   MASS   TIME   M.K.S  Meter killogram sec  C.G.S  Centi meter  gram sec  S.I.  meter killogram sec The unit of time (i.e. second) is the same in all the three systems of units.

Question 9

How do you measure the time period of a given pendulum? Why do you note the time for more than one oscillation ?

Accepted Answer

Time period is the time taken by the body to complete one oscillation and it is noted more than once to get accurate reading from averaging of all the observed values.

Question 10

Which of the following is not a unit of time?

Accepted Answer

Here, hour, nano second and microsecond are all the unit of time. 1 hour  =3600  second, one nano second  =10^{9}  second, one microsecond  =10^{-6}  secondLight year is the unit of astronomical distance and it is equivalent to distance traveled by light in one year.

Measurement of time using Simple Pendulum

Language

Rate

NEXT VIDEOS

REVISE WITH CONCEPTS

Measurement of Time by a Simple Pendulum

Concept of Time - Simple Pendulum.

Measuring Short Intervals of Time

QUICK SUMMARY WITH STORIES

Working of a simple pendulum

Time period of simple pendulum

Measurement of Time- Basic and other units

Seconds Pendulum

Important Questions