1) 1. What is the main aim of the experiment with the convex lens? a) A. To measure sunlight intensity b) B. To create electricity c) C. To concentrate sunlight and produce heat d) D. To test lens durability 2) 2. Which material is used to focus sunlight in the experiment? a) A. Concave mirror b) B. Convex lens c) C. Glass prism d) D. Plastic sheet 3) 3. What happens to the paper when the sunlight is focused on it? a) A. It cools down b) B. It changes color c) C. It darkens or burns slightly d) D. It becomes transparent 4) 4. Which type of energy is converted during the experiment? a) A. Electrical to heat b) B. Light to heat c) C. Sound to light d) D. Chemical to heat 5) 5. Why is a stopwatch used in the experiment? a) A. To measure the size of the lens b) B. To track how long the paper takes to burn c) C. To check the temperature d) D. To measure sunlight brightness 6) 6. What kind of day is best for this experiment? a) A. Rainy b) B. Cloudy c) C. Windy d) D. Sunny 7) 7. What does the bright spot of light on the paper represent? a) A. A shadow b) B. A reflection c) C. A focused beam of sunlight d) D. A magnified image 8) 8. What scientific principle is demonstrated by this experiment? a) A. Refraction of light b) B. Conversion of light energy to heat energy c) C. Magnetic attraction d) D. Sound wave amplification

JKC Std VI Quiz: Heat Energy Generation Using a Convex Lens (Activity)

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