Light from an underwater lamp is refracted at the surface of water. Which labelled angle is the angle of refraction of the light?
▶️Answer/Explanation
Ans: C
Question
A ray of light enters a parallel-sided glass block. At which labelled point does the ray leave the block?
▶️Answer/Explanation
Ans : B
Question
The diagram shows a ray of light passing from glass into air. Two angles P and Q are labelled.
What is the angle of refraction? (A) P (B) Q (C) 90° – P (D) 90° – Q
▶Answer/Explanation
Ans : D
Question
A student places four identical beakers on a bench. Two beakers contain salt water of density 1.1 g/cm3 and two beakers contain pure water of density 1.0 g/cm3. The quantity of water in each beaker is shown. Which beaker exerts the greatest pressure on the bench?