Question

11. Statements given below are incorrect. Write the correct statements. 1. The motion described by the needle of a sewing machine is vibratory motion. 2. The motion of car going around a curved track is rotatory motion. 3. The motion of a freely suspended pendulum is curvilinear motion. 4. The motion of the wire of a violin is oscillatory motion. 5. The revolution of the earth around the sun is non-periodic motion. 6. One millimetre is equal to 1,000,000 m. 7. Centimetre is the SI unit of length.​

Answer 1

1.incorrect

2.incorrect

3.incorrect

4.correct

5.incorrect

6.incorrect

1.The motion described by the needle of a sewing machine is oscillatory motion

2.The motion of car going around a curved track is curvilinear motion

3.The motion of a freely suspended pendulum is oscillatory motion

5.The revolution of the earth around the sun is periodic motion.

6.1m=1000mm