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NEETPhysicsWaves and Sound

Source has frequency (f ). Source and observer both have same speed. For the apparent frequency observed by observer, match the following columns. ( array |l|l|l|l| & Column I & & Column II (A) & array l Observer is approaching the source but source is receding from the observer array & (p) & More than f (B) & array l Observer and source both approaching towards each other array & (q) & Less than f (C) & array l Obse

Options

  1. A((A r, B p, C q, D r) )
  2. B((A p, B q, C s, D r) )
  3. C((A q, B r, C s, D r) )
  4. D((A s, B p, C q, D r) )

Correct answer

A. ((A r, B p, C q, D r) )

Step-by-step solution

(a) (f^ =f ( v+v₀ v+v_s )=f ) (b) (f^ =f ( v+v₀ v-v_s )>f ) (c) (f^ =f ( v-v₀ v+v_s ) < f ) (d) (f^ =f ( v-v₀ v-v_s )=f )

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