Teaching Railway Teacher PRT 2025 Mock Test Series General Science Physics Wave

આપાત કિરણ અને પરાવર્તિત કિરણ વચ્ચેનો ખૂણો 80° છે. તો આપાત ખૂણો કેટલો હશે?

1
40°
2
90°
3
60°
4
80°
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