COVID-19: How to Stay Safe & Healthy

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Homework Statement
why will angle of incidence on the surface of the lens be greater when point light source is nearer to the lens?
Relevant Equations
nil
nil
 
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ellieee said:
Homework Statement:: why will angle of incidence on the surface of the lens be greater when point light source is nearer to the lens?
Relevant Equations:: nil

nil
Have you tried drawing a diagram?
 
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Thread 'A cylinder connected to a hanged mass'

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