PHYSICS 10 SCIENCE · 2026–27 · From the chapter · exam-style questions · p. 54

Original MCQ based on chapter text

An echo delay measures a path equal to:

بازگشت کی تاخیر کس راستے کا وقت ہے؟

  1. (a)

    the one-way distance

    یک طرفہ فاصلے

  2. (b)

    twice the reflector distance

    سطح تک فاصلے کے دوگنے

  3. (c)

    half the reflector distance

    سطح تک آدھے فاصلے

  4. (d)

    zero distance

    صفر فاصلے

Solution & explanation

Correct choice(s): (b)

(b) The sound travels to the reflector and returns: s = 2d.

Independent study material · English-medium textbook p. 54 · Original book ↗