Question Detail

PHY 104 PHY 104 Past Questions Objective Question
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Question

A body sends waves 100 mm long through medium A and 0.25 m long in medium B. If the velocity of waves in medium A is 80 cm/s. The velocity of waves in medium B is
Options
A 1 m/s
B 2 m/s
Correct Answer
C 3 m/s
D 4 m/s
Correct Answer

Option B is the correct answer.

Detailed Explanation

The frequency is the same in both media. f = v_A/λ_A = 0.8 m/s / 0.1 m = 8 Hz. v_B = fλ_B = 8 × 0.25 = 2 m/s.

Hint

Frequency remains constant when waves change medium.

Question Info

Course: PHY 104
Topic: PHY 104 Past Questions
Type: Objective
Difficulty: Not specified
Question 918 of 947
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