Shadow forms when opaque object blocks light. Shadow is always on opposite side from light source. Bigger/closer object = larger shadow. Farther object = smaller shadow. Shadow shape shows silhouette of object. Shadows show direction of light source.
How to study this topic
Read the core explanation once without solving.
Open the formula links below and connect them with the topic meaning.
Practice the 10 example pages one by one.
Use the AI ask page for text, voice or image-based doubts.