๐ Class 7 Science Curiosity – Chapter 11 Solutions
๐ฆ Light: Shadows and Reflections | Amresh Academy
✍️ ๐น Very Short Answer Type Questions
What are luminous objects?
Does the Moon produce its own light?
In which direction does light travel?
What kind of materials form clear shadows?
Name the mirror that forms erect, laterally inverted images.
๐ง ๐น Short Answer Type Questions
What is the difference between transparent, translucent, and opaque objects?
๐ Answer:
- ๐ Transparent → Light passes completely (glass)
- ๐ซ️ Translucent → Partial light passes (butter paper)
- ⬛ Opaque → Blocks light completely (wood)
How does light create shadows?
What is reflection of light?
Why is ‘AMBULANCE’ written in reverse on emergency vans?
What is lateral inversion?
๐ ๐น Descriptive Answer Type Questions
Describe the image formed by a plane mirror.
- Virtual
- Erect
- Same size
- Laterally inverted➡️ Cannot be caught on screen
Explain how a pinhole camera works.
How do shadows change with the position of the object and light?
- Near light → Large shadow
- Near screen → Small shadow
What are the three conditions needed to form a shadow?
What is a periscope and how does it work?
๐ ๐น Exploring Questions
Why don’t we see a bird’s shadow when it flies high in the sky?
Why do objects in a kaleidoscope form multiple patterns?
How is the image in a mirror different from that in a pinhole camera?
How does the use of LED lights benefit society?
- Uses less energy
- Long-lasting
- Eco-friendly ๐
Can a small mirror form the image of a large object?
