Give two mechanical-wave examples.
میکانی لہروں کی دو مثالیں دیں۔
Solution & explanation
Sound in air and waves on a stretched rope; both need a material medium.
Independent study answer. Original textbook ↗ · English-medium printed page 44.
PHYSICS 10 SCIENCE · 2026–27 · B · Short answers · QUESTION 12.2 · EM p. 44