Refraction of Light
Q: Light enters glass (n=1.51) at 30° incidence. Angle of refraction?
Did You Know?
The correct answer is: 'They said that they were going to the market then.' Present continuous (are going) changes to past continuous (were going), pronouns change (we → they), and time expressions change (now → then). Example: Direct: 'I am reading now,' he said. Indirect: He said that he was reading then. Time and place words often shift: today → that day, here → there, tomorrow → the next day, etc.
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