Physics Practice: Light Energy (Mock Test 2 - Intermediate)
1. The ray of light that falls on a reflecting surface is called the:
2. Which of the following is true for a virtual image?
3. If an object is placed $2.5 \text{ m}$ in front of a plane mirror, the distance between the object and its image is:
4. Regular reflection is also known as ________ reflection.
5. The number of images ($n$) formed by two plane mirrors kept at an angle $\theta$ is given by:
6. A kaleidoscope produces beautiful patterns based on the principle of:
7. When a ray of light is incident normally on a plane mirror, the angle of reflection is:
8. Lateral inversion is a characteristic property of images formed by:
9. Which mirrors are used in barbershops to see the back of the head?
10. Light travels at its maximum speed in:
11. If the angle between the incident ray and the reflected ray is $80^\circ$, the angle of incidence is:
12. The word 'AMBULANCE' is written laterally inverted on the vehicle so that:
13. In a plane mirror, the image is as far ________ the mirror as the object is in ________ of it.
14. Which color of the spectrum bends the least during dispersion?
15. Plane mirrors are used in solar cookers to ________ the sunlight into the box.
16. If two plane mirrors are kept at an angle of $90^\circ$, the number of images formed is:
17. A mirror with a silver coating at the back is protected by a layer of ________ paint.
18. The laws of reflection are applicable for:
19. A ray of light which returns to the same medium after hitting the mirror is the ________ ray.
20. In a periscope, if the top mirror is turned at $90^\circ$ to the bottom one, the observer will: