10. Give two examples of periodic motion.
Two examples of periodic motion are:
(i) The needle of a sewing machine.
(ii) The blades of a fan which is switched on.
i ) A rocking chair
ii) a bouncing ball
iii) a swing in motion
NVS Class 9, 11 Admission 2025: LEST registration last date extended again; apply by November 26
NVS Admission 2025: Registration deadline today for Class 9, 11 lateral entry selection test
NVS Admission 2025: Class 9, 11 lateral entry registration deadline extended till November 19
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