12th Grade > Physics
ELECTROMAGNETIC WAVES AND INDUCTION MCQs
Electromagnetic Waves, Electromagnetic Induction, Waves On A String
Total Questions : 73
| Page 8 of 8 pages
Answer: Option D. -> 1.6× 10−10 kg−m/s2
:
D
Momentum transferred in one second
p=2Uc=2SavAc=2×6×40×10−43×108
=1.6×10−10kg−m/s2.
:
D
Momentum transferred in one second
p=2Uc=2SavAc=2×6×40×10−43×108
=1.6×10−10kg−m/s2.
Answer: Option A. -> Eok=Boω
:
A
E0B0=C. also k=2πλ and w=2πv
These relation gives E0K=B0w
:
A
E0B0=C. also k=2πλ and w=2πv
These relation gives E0K=B0w
Answer: Option D. -> 54.77 V/m
:
D
Intensity of EM wave is given by
I=P4πR2=vav.C=12ϵ0E20×c
⇒E0=√P2πR2ϵ0c
=√8002×3.14×(4)2×8.85×10−12×3×108
=54.77Vm
:
D
Intensity of EM wave is given by
I=P4πR2=vav.C=12ϵ0E20×c
⇒E0=√P2πR2ϵ0c
=√8002×3.14×(4)2×8.85×10−12×3×108
=54.77Vm
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