Textbook brain teaser
A stretched slinky is shaken sideways and then pushed back and forth along its length. Which two types of wave are created?
کھنچی سلنکی کو پہلے پہلو میں ہلائیں اور پھر اس کی لمبائی کے ساتھ آگے پیچھے دبائیں تو کون سی دو موجیں بنتی ہیں؟
Solution & explanation
Sideways displacement perpendicular to travel produces a transverse wave. Pushing and pulling along the direction of travel produces a longitudinal wave with compressions and rarefactions. Classification compares particle displacement with energy propagation.
Independent study material · English-medium textbook p. 36 · Original book ↗