Question

1
On which of the following factors does the time period of a simple pendulum
depends
a Amplitude of the bob
b. Length of the string
cMass of the bob
d. Both (b.) and (c.)
Ć A car moves with the speed of 15 m/s. What is its speed in km/h?
18
5
15
b. 15
c. 15 x 18 x 5
d.
5
18
5 x 18
The docks or watches used to measure time are based on
2. oscillatory motion
b. rectilinear motion
c periodic motion
d. both (a.) and (b.)
& l decade =
a. 15*
d. 1 year
a 100 years
b. 10 years
c. 1000 years
9. Which of the following is not a unit of speed?
a. m/s
b. km/h
10. Which of the following devices is not used to measure time?
a. Sand clock b. Sundial
c. Speedometer
c. kmh
d. Both (a.) and (b.)
d. Water clock
Fill in the blanks.​

Answer 1

Answer:

1 (c) \\\2 {15× 1000/3600}\\\3{c}\\\4{c}\\\9{both are the unit of speed} \\\10{c}