The electric field of an electromagnetic wave travelling through a medium is given by \overrightarrow{E}(x, t)=25 \sin (2.0 \times 10^{15} t-10^7 x) \hat{n} then the refractive index of the medium is \_\_\_\_ . (All given measurement are in SI units) [28 Jan 2026 Shift 1]

Electromagnetic Waves Part 2

Section: Physics

Question : 2 of 54

Marks: +1, -0

The electric field of an electromagnetic wave travelling through a medium is given by

→

(x,t)=25sin‌(2.0×1015t−107x)

∧

then the refractive index of the medium is ____ .
(All given measurement are in SI units)

[28 Jan 2026 Shift 1]

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