A_WAVE_INCIDENT_ON_A_SURFACE_AT_AN_ANGLE_60_DEGREE_IS_HAVING_FIELD_INTENSITY_OF_6_UNITS._THE_REFLECTED_WAVE_IS_AT_AN_ANGLE_OF_30_DEGREE._FIND_THE_FIELD_INTENSITY_AFTER_REFLECTION.?$

• A. 9.4
• B. 8.4
• C. 10.4
• D. 7.4