Email
Chat with tutors
logo

Ask Questions, Get Answers

X
 
Questions  >>  CBSE XII  >>  Physics  >>  Electromagnetic waves
Answer
Comment
Share
Q)

The magnetic field of a beam emerging from a filter facing a flood light is given by $B = 12 \times 10^{-8} \sin (1.20 \times 10^7\;z -3.60 \times 10^{15}t)T$ What is the average intensity of the beam ?

$\begin{array}{1 1} 1.71 \times 10^{-2} w/m^2 \\ 17.1\;w/m^2 \\ 1.71\;w/m^2 \\ 0.171\;w/m^2 \end{array} $

1 Answer

Home Ask Tuition Questions
Your payment for is successful.
Continue
...