Can you provide another example of a long question for the BISE Faisalabad Class 12 Physics exam?

My apologies, it seems there was a misunderstanding. I previously provided the answer to the long question. If you would like me to rephrase the *question itself* to better fit the exam pattern, please clarify. However, if you meant you want another *example* of a long question for the BISE Faisalabad Class 12 Physics exam, here is one: --- **Long Question (BISE Faisalabad Pattern - Class 12 Physics)** **Explain the phenomenon of total internal reflection. Derive the condition for total internal reflection to occur and discuss its practical applications in optical fibers and prisms.** *Support your answer with neat, labeled ray diagrams and relevant mathematical derivations.* **Exam Focus:** * Clearly define critical angle. * Distinguish between reflection and total internal reflection. * Common error: Forgetting to mention the requirement for light to travel from a denser to a rarer medium. ---