MOTION AND TIME CLASS 7

The time period of a simple pendulum is the time taken by it to travel from

(a) A to B and back to A

(b) O to A, A to B and B to A

(c) B to A, A to B and B to O

(d) A to B

• a)

• b)

• c)

• d)

Nearly all the clocks make use of

(a) straight line motion

(b) periodic motion

(c) random motion

(d) circular motion

• a)

• b)

• c)

• d)

A simple pendulum takes 42 sec. to complete 20 oscillations. What is its time period?

(a) 2.1 s

(b) 4.2 s

(c) 21 s

(d) 8.40 s

• a)

• b)

• c)

• d)

Which of the following cannot be used for measurement of time?

(a) A leaking tap

(b) Simple pendulum

(c) Shadow of an object during the day

(d) Blinking of eyes

• a)

• b)

• c)

• d)

The correct symbol to represent the speed of an object is:

(a) 5 m/s

(b) 5 mp

(c) 5 m/s-1

(d) 5 s/m

• a)

• b)

• c)

• d)

Tags

NGSS.MS-PS3-1

The distance covered by an object in a ………………… is called its speed.

• unit time

• unit meter

• kilometer

• meter

Tags

NGSS.MS-PS3-1

Time between one sunrise and the next sunrise is called a …………………

• hour

• year

• day

• month

In a simple pendulum, the metallic ball suspended by thread is called its …………………

• barber

• side bob

• pendulum

• bob