Q: When a light ray passes from glass to air and angle to incidence is 90 degree, then what is the angle of refraction?/जब एक प्रकाश किरण काँच से हवा में जाती है और आपतन का कोण 90º होता है तो अपवर्तन काण क्या होता है?
A.
0.75 degree
B.
1.5 degree
C.
0.25 degree
D.
1.75 degree
Correct Answer:
Option B -
Explanations:
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