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2020 MHT-CET PCB SET - 02 — MHT - CET STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceMHT - CET2020 MHT-CET PCB SET - 021 Mark
MCQ
An alternating $e.m.f.$ is given by $e = e_0 \sin ωt.$ In what time the $e.m.f.$ will have half its maximum value, if $'e\ '$ starts from zero? $(T = $Time period$) \ \left(\sin 30^{\circ}=\cos 60^{\circ}=0.5, \cos 30^{\circ}=\sin 60^{\circ}=\frac{\sqrt{3}}{2}\right)$
  • A
    $\frac{ T }{4}$
  • ✓
    $\frac{ T }{12}$
  • C
    $\frac{T}{8}$
  • D
    $\frac{ T }{16}$
✓

Answer

Correct option: B.
$\frac{ T }{12}$
$\frac{ T }{12}$

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