When a ray of light is incident normally on an air- glass interface, its angle of refraction is

tochi

1 year ago

𝚆𝚑𝚎𝚗 𝚊 𝚛𝚊𝚢 𝚘𝚏 𝚕𝚒𝚐𝚑𝚝 𝚑𝚒𝚝𝚜 𝚊 𝚜𝚞𝚛𝚏𝚊𝚌𝚎 𝚗𝚘𝚛𝚖𝚊𝚕𝚕𝚢, 𝚒𝚝 𝚖𝚎𝚊𝚗𝚜 𝚝𝚑𝚎 𝚕𝚒𝚐𝚑𝚝 𝚒𝚜 𝚌𝚘𝚖𝚒𝚗𝚐 𝚜𝚝𝚛𝚊𝚒𝚐𝚑𝚝 𝚊𝚝 𝚝𝚑𝚎 𝚜𝚞𝚛𝚏𝚊𝚌𝚎 𝚊𝚝 𝚊 90-𝚍𝚎𝚐𝚛𝚎𝚎 𝚊𝚗𝚐𝚕𝚎 (𝚙𝚎𝚛𝚙𝚎𝚗𝚍𝚒𝚌𝚞𝚕𝚊𝚛 𝚝𝚘 𝚝𝚑𝚎 𝚜𝚞𝚛𝚏𝚊𝚌𝚎).

𝙽𝚘𝚠, 𝚒𝚏 𝚕𝚒𝚐𝚑𝚝 𝚖𝚘𝚟𝚎𝚜 𝚏𝚛𝚘𝚖 𝚊𝚒𝚛 𝚒𝚗𝚝𝚘 𝚐𝚕𝚊𝚜𝚜:

1. 𝙰𝚗𝚐𝚕𝚎 𝚘𝚏 𝚒𝚗𝚌𝚒𝚍𝚎𝚗𝚌𝚎: 𝚃𝚑𝚒𝚜 𝚒𝚜 𝚝𝚑𝚎 𝚊𝚗𝚐𝚕𝚎 𝚋𝚎𝚝𝚠𝚎𝚎𝚗 𝚝𝚑𝚎 𝚒𝚗𝚌𝚘𝚖𝚒𝚗𝚐 𝚛𝚊𝚢 𝚊𝚗𝚍 𝚝𝚑𝚎 𝚜𝚞𝚛𝚏𝚊𝚌𝚎. 𝚂𝚒𝚗𝚌𝚎 𝚝𝚑𝚎 𝚛𝚊𝚢 𝚒𝚜 𝚌𝚘𝚖𝚒𝚗𝚐 𝚜𝚝𝚛𝚊𝚒𝚐𝚑𝚝 𝚊𝚝 𝚝𝚑𝚎 𝚜𝚞𝚛𝚏𝚊𝚌𝚎, 𝚝𝚑𝚒𝚜 𝚊𝚗𝚐𝚕𝚎 𝚒𝚜 0°.


2. 𝙰𝚗𝚐𝚕𝚎 𝚘𝚏 𝚛𝚎𝚏𝚛𝚊𝚌𝚝𝚒𝚘𝚗: 𝚃𝚑𝚒𝚜 𝚒𝚜 𝚝𝚑𝚎 𝚊𝚗𝚐𝚕𝚎 𝚊𝚝 𝚠𝚑𝚒𝚌𝚑 𝚝𝚑𝚎 𝚕𝚒𝚐𝚑𝚝 𝚋𝚎𝚗𝚍𝚜 𝚠𝚑𝚎𝚗 𝚒𝚝 𝚎𝚗𝚝𝚎𝚛𝚜 𝚝𝚑𝚎 𝚗𝚎𝚠 𝚖𝚊𝚝𝚎𝚛𝚒𝚊𝚕 (𝚒𝚗 𝚝𝚑𝚒𝚜 𝚌𝚊𝚜𝚎, 𝚐𝚕𝚊𝚜𝚜).



𝚂𝚒𝚗𝚌𝚎 𝚝𝚑𝚎 𝚕𝚒𝚐𝚑𝚝 𝚒𝚜 𝚑𝚒𝚝𝚝𝚒𝚗𝚐 𝚝𝚑𝚎 𝚜𝚞𝚛𝚏𝚊𝚌𝚎 𝚊𝚝 0° (𝚜𝚝𝚛𝚊𝚒𝚐𝚑𝚝 𝚘𝚗), 𝚝𝚑𝚎𝚛𝚎 𝚒𝚜 𝚗𝚘 𝚋𝚎𝚗𝚍𝚒𝚗𝚐 𝚊𝚝 𝚊𝚕𝚕. 𝚃𝚑𝚎 𝚕𝚒𝚐𝚑𝚝 𝚓𝚞𝚜𝚝 𝚙𝚊𝚜𝚜𝚎𝚜 𝚜𝚝𝚛𝚊𝚒𝚐𝚑𝚝 𝚝𝚑𝚛𝚘𝚞𝚐𝚑 𝚒𝚗𝚝𝚘 𝚝𝚑𝚎 𝚐𝚕𝚊𝚜𝚜 𝚠𝚒𝚝𝚑𝚘𝚞𝚝 𝚌𝚑𝚊𝚗𝚐𝚒𝚗𝚐 𝚍𝚒𝚛𝚎𝚌𝚝𝚒𝚘𝚗.

𝚂𝚘, 𝚝𝚑𝚎 𝚊𝚗𝚐𝚕𝚎 𝚘𝚏 𝚛𝚎𝚏𝚛𝚊𝚌𝚝𝚒𝚘𝚗 𝚒𝚜 𝚊𝚕𝚜𝚘 0°, 𝚖𝚎𝚊𝚗𝚒𝚗𝚐 𝚝𝚑𝚎 𝚕𝚒𝚐𝚑𝚝 𝚍𝚘𝚎𝚜𝚗'𝚝 𝚋𝚎𝚗𝚍 𝚊𝚜 𝚒𝚝 𝚎𝚗𝚝𝚎𝚛𝚜 𝚝𝚑𝚎 𝚐𝚕𝚊𝚜𝚜. 𝙸𝚝 𝚔𝚎𝚎𝚙𝚜 𝚐𝚘𝚒𝚗𝚐 𝚜𝚝𝚛𝚊𝚒𝚐𝚑𝚝.