Motion class 7

If an object moves in a line in such a way that every point of the object moves through the same distance in the same time.

• rotatory motion

• periodic motion

• translatory motion

The motion of a cycle while taking a turn on the road

• curvilinear motion

• rectilinear motion

• oscillatory motion

A bus travels 54 km in 90 minutes. The speed of the bus is

(a) 0.6 m/s

(b) 10 m/s

(c) 5.4 m/s

(d) 3.6 m/s

• a)

• b)

• c)

• d)

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)

Time period of a simple pendulum depends upon its

(a) weight of bob

(b) length

(c) both (a) and (b)

(d) None of these

• 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)

On which axis is dependent variable represented?

(a) x-axis

(b) y-axis

(c) On any axis

(d) Depends on the data

• a)

• b)

• c)

• d)q

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)