MHT CET 2026 Physics question
A body sends a wave 150 mm long through medium P and 0.30 m long in medium Q. If velocity of the wave in medium P is 80 cm s, the velocity of wave in medium Q is
Answer: (D)
Solution
The frequency is fixed by the source and does not change when a wave enters a new medium, so gives . Here mm = 15 cm, m = 30 cm and cm/s. Therefore $
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