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JEE MAIN 2026
28-01-26 S1
Question
The electric field of an electromagnetic wave travelling through a medium is given by $\vec{E}(x, t)=25 \sin \left(2.0 \times 10^{15} t-10^7 x\right) \hat{n}$ then the refractive index of the medium is $\_\_\_\_$ .
(All given measurement are in SI units)
Select the correct option:
A
1.2
B
2
C
1.5
D
1.7
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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