Waves Notes Class 11 FBISE NBF: Solved chapter on wave intensity, energy transfer, amplitude relation. From Hamdard Science Academy PDF.
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Intensity of Waves
Definition: Average energy rate per unit area perpendicular to propagation.
Explanation: Waves carry energy; intensity decreases with distance from source.
Derivations: I = P/A; I ∝ A².
Exercises Solved
Solved MCQs
(Not found in PDF)
Short Responses
9.1 No. Constructive interference: Amplitude 2A, not intensity double.
Long Responses
9.1 Superposition: Resultant displacement sum of individual.
Numericals
9.1 Intensity 1.50×10² W/m²; Area 3×5 cm.
Assignments
Assignment 9.1 Intensity ∝ A².
Master waves chapter notes FBISE with NBF physics unit 9 solved.
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