Question

Boojho tied a stone to a string and released it after pulling it back . Here the stone acts as a
a. Stationary object
b. Falling body
c. A simple pendulum
d. simple toy
Q2. Teacher listed on the board some examples of periodic motion out of which one is incorrect. Help Paheli to identify the INCORRECT example.
a. Strings of a guitar
b. Minute hand of a clock
c. Earth moving on its axis
d. Running of a batsman between the wickets
Q3. Vihaan put the clothes for washing in a washing machine. The clothes undergo combination of __________ motion that helps to clean the clothes.
a. Linear and circulatory
b. Linear and non periodic
c. Circular and Rotational
d. To and fro
Q4. We can determine whether the object is in slow or fast in motion by
a. Measuring its weight
b. Measuring its height
c. Measuring its length
d. Measuring the distance covered by the body with respect to time.
Q5. Which of the following statements are true for the motion of a sewing machine?
i)Sewing machine changes its position with time
ii)Machine does not change its position but the wheels perform circular motion. iii)The needle moves up and down continuously
i) and ii)
ii) and iii)
i) and iii)
i), ii) and iii)









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Answer 1

Answer:

a. stationary object

b, minute hand of clock

c. circular and rotational

d. Measuring the distance covered by the body with respect to time.

i) and iii)