169Mirrors and lenses
COMING SOON · LESSON 169 OF 171Mirrors and lensesFocal lengths by the parallax and u–v methods.This lesson is in production. Grand Master Physics opens in January 2027.
Practice mission: comes with the lesson
See it · the lesson15 to 20 minutes, one teacher and one student, with the pen, think pauses and a worked exam problem.
Solve it · the practice missionSix steps after the video: Decode, Quiz, Recall, Predict, Solve and real past exam questions.
Keep it · the reviewWhat you miss comes back after 1, 3, 7 and 21 days.
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