PHYSICS 10 SCIENCE · 2026–27 · Textbook brain teasers · p. 37

Textbook brain teaser

Two waves travel at the same speed, but one has a higher frequency. Which has the shorter wavelength?

دو موجوں کی رفتار برابر مگر ایک کا تعدد زیادہ ہے۔ کس کا طول موج کم ہے؟

Solution & explanation

Use v = fλ, so λ = v/f. With v fixed, a larger f gives a smaller λ. For example, doubling frequency halves wavelength; speed equality must be stated for this comparison.

Independent study material · English-medium textbook p. 37 · Original book ↗