Fig. shows a surface XY separating two transparent media, medium 1 and medium 2. Lines ab and cd represent wavefronts of a light wave travelling in medium 1 and incident on XY. Line ef and gh represent wavefront of the light wave in medium 2 after rafraciton. The phase of the ligth wave at c, d, e, and f are `phi_(c)`, phi_(d), `phi_(e)` and `phi_(f)`, respectively. It is given that `phi_(c ) != phi_(f)`. ThenA. `phi_c ` cannot be equal to ` phi_d `B. `phi_d ` can be equal to ` phi_e`C. `( phi_d - phi_f)` is equal to ` ( phi_c - phi_e )`D. `(phi_d - phi_c)` is not equal to ` ( phi_f - phi_e )`

Fig. shows a surface XY separating two transparent media, medium 1 and

1.	Fig. shows a surface XY separating two transparent media, medium 1 and medium 2. Lines ab and cd represent wavefronts of a light wave travelling in medium 1 and incident on XY. Line ef and gh represent wavefront of the light wave in medium 2 after rafraciton. The phase of the ligth wave at c, d, e, and f are `phi_(c)`, phi_(d), `phi_(e)` and `phi_(f)`, respectively. It is given that `phi_(c ) != phi_(f)`. ThenA. `phi_c ` cannot be equal to ` phi_d `B. `phi_d ` can be equal to ` phi_e`C. `( phi_d - phi_f)` is equal to ` ( phi_c - phi_e )`D. `(phi_d - phi_c)` is not equal to ` ( phi_f - phi_e )`
Answer» Correct Answer - C

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