Kindly solve the ques 13 and 14 - Physics - Electromagnetic Waves

Question

Kindly solve the ques 13 and 14

Debalina Deb · Accepted Answer

Dear student,
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_6005aeabdd412%20jpg"
style="width: 1021px; height: 423px;">
Regards,