Physics Practice: Light Energy (Mock Test 5 - Ultimate Comprehensive)
1. Light is a form of energy that travels in a ________ path.
2. The bouncing of light from a polished surface is ________.
3. A plane mirror forms an image that is always ________.
4. The angle of incidence is the angle between the incident ray and the ________.
5. According to the Laws of Reflection, $\angle i$ is ________ $\angle r$.
6. Lateral inversion means the ________ side of the object appears as the ________ side of the image.
7. Which of the following is a non-luminous body?
8. A periscope uses two plane mirrors placed at an angle of ________ to the axis.
9. When white light passes through a prism, the process of splitting is called ________.
10. The speed of light in vacuum is approximately ________ $m/s$.
11. Multiple images are formed when two mirrors are kept ________.
12. A kaleidoscope is based on the principle of ________.
13. The dark region of a shadow where no light reaches is the ________.
14. If a ray of light is incident normally on a plane mirror, it reflects back at ________.
15. The band of seven colors obtained after dispersion is called a ________.
16. Diffused reflection occurs from ________ surfaces.
17. Plane mirrors are used in ________ to reflect sunlight into the box.
18. The image formed by a plane mirror is of the ________ size as the object.
19. In VIBGYOR, 'I' stands for ________.
20. Light energy is required by plants for ________.