Advanced Science Primary 4 Energy

A cylindrical mug is placed between a torch and a screen. Depending on how the mug is positioned, what are the possible shapes of the shadow cast on the screen?

A Only a circle.
B A circle and a triangle.
C A circle and a rectangle.
D A square and a triangle.
Show Worked Solution

Worked Solution

Step 1: A cylinder has a circular top/bottom and straight sides. Step 2: If light shines on the circular face, the shadow is a circle. Step 3: If light shines on the curved side profile, the shadow is a rectangle.

Correct answer: A circle and a rectangle.

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free