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Waves · 2019 · 12 Apr · Shift 2

2 Physics questions from this JEE Main paper
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Waves · 2019 · 12 Apr · Shift 2

2 Physics questions from this JEE Main paper

  1. Q44.A small speaker delivers 2 W of audio output. At what distance from the speaker will one detect 120 dB intensity sound ? [Given reference intensity of sound as 10–12 W/m2 ]
    Physics · Waves · MCQ
  2. Q45.A tuning fork of frequency 480 Hz is used in an experiment for measuring speed of sound (v) in air by resonance tube method. Resonance is observed to occur at two successive lengths of the air column, l1 = 30 cm and l2 = 70 cm. Then, v is…
    Physics · Waves · MCQ