The length of the shadow will be longest when the

• A. Angle between the source of light and the object is 45
• B. Source of light and the object are parallel to each other
• C. Source of light and the object are perpendicular to each other
• D. Angle between the source of light and the object is 60

The length of a shadow is influenced by the angle of the light source in relation to the object casting the shadow. To determine when the shadow is longest, consider the following options:

Analyzing the Options

• A. Angle between the source of light and the object is 45°: This angle creates a moderate shadow length.
• B. Source of light and the object are parallel to each other: In this case, the shadow is minimal or nonexistent.
• C. Source of light and the object are perpendicular to each other: This typically results in a shorter shadow.
• D. Angle between the source of light and the object is 60°: This angle also produces a shorter shadow compared to a lower angle.

Conclusion

The longest shadow occurs when the light source is low on the horizon, which is typically when the angle is closer to 0°. However, among the given options, the shadow will be longest when the angle is 45°, making option A the best choice.