At fixed wave speed, doubling frequency makes wavelength:

موج کی رفتار مستقل ہو اور تعدد دوگنا کریں تو طول موج:

Solution & explanation

Correct choice(s): (b)

(b) λ = v/f, so doubling the denominator halves λ.

Independent study material · English-medium textbook p. 38 · Original book ↗