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CBSE Class 12 Physics 2024 All Sets Solved Paper

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Question : 6 of 14
Marks: +1, -0
In four regions I, II, III and IV, the magnetic field is given by:
I. By=B0sin⁡kzB_y= B_0 \sin kz
II. By=B0cos⁡kzB_y= B_0 \cos kz
III. By=B0sin⁡(kz−ωt)B_y= B_0 \sin (kz - \omega t)
IV. By=B0sin⁡kz+B0cos⁡kzB_y= B_0 \sin kz + B_0 \cos kz
The electromagnetic wave will exist in the region:
Solution:  
E=E0sin⁡(kx−ωt)E =E_0 \sin(kx - \omega t)
B=B0sin⁡(kz−ωt)B =B_0 \sin(kz - \omega t)
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