Which of the following can never form a circular shadow

Options

A. A ball
B. A flat disc
C. A shoe box
D. An ice cream cone

Answer

To determine which object can never form a circular shadow, we can analyze the shapes of the given options. Here’s a step-by-step solution:

### Step 1: Understand the concept of shadows
Shadows are formed when an opaque object blocks light from a light source. The shape of the shadow depends on the shape of the object and the angle of the light source.

**Hint:** Remember that the shape of the shadow can vary based on the object's geometry and the light source's position.

### Step 2: Analyze the shapes of the objects
1. **Ball**: A ball is spherical. When light shines on it, it will cast a circular shadow regardless of the angle of the light source.

**Hint:** Think about how a round object like a ball casts a shadow.

2. **Flat Disc**: A flat disc is circular in shape. When light shines on it, it will also cast a circular shadow.

**Hint:** Consider how a flat object with a circular shape behaves under light.

3. **Shoe Box**: A shoe box is rectangular in shape. When light shines on it, the shadow will be rectangular or square, depending on the angle of the light.

**Hint:** Visualize the front view of a box and how it would block light.

4. **Ice Cream Cone**: An ice cream cone has a conical shape. When light shines on it, it can cast a circular shadow at the base where the cone meets the ground.

**Hint:** Think about how the base of a cone can create a circular shadow.

### Step 3: Identify the object that cannot form a circular shadow
From the analysis:
- The ball, flat disc, and ice cream cone can all form circular shadows.
- The shoe box, being rectangular, cannot form a circular shadow.

### Conclusion
The object that can never form a circular shadow is the **shoe box**.

**Final Answer:** Option C: Shoe Box

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