Physics Practice: Light Energy (Mock Test 4 - Expert)
1. In an expert physics setup, a plane mirror is rotated by an angle $\theta$. The reflected ray will rotate by an angle of:
2. To see the full height of a person of height $H$, the minimum vertical size of a plane mirror required is:
3. A ray of light is incident on a plane mirror. If the mirror is shifted parallel to itself by a distance $x$, the image shifts by a distance:
4. Which of the following is true regarding the "Umbra" of a shadow?
5. If $360/\theta$ results in an even integer $m$, the number of images formed by two plane mirrors at angle $\theta$ is:
6. The color of an opaque object is determined by the color of light it ________.
7. A virtual image is always ________ with respect to the object.
8. "Multiple Reflections" are utilized in designing which of the following expert instruments?
9. The phenomenon of dispersion shows that glass has different ________ for different colors of light.
10. An incident ray makes an angle of $35^\circ$ with the normal. What is the angle between the incident ray and the reflected ray?
11. Light energy is converted into chemical energy during:
12. A red rose seen in green light will appear:
13. In a plane mirror, the left-right reversal is called ________.
14. If a source of light is a point source, the shadow formed consists only of:
15. The "Angle of Deviation" for a ray incident normally on a plane mirror is:
16. Solar panels work by converting light energy into ________ energy.
17. A plane mirror always forms a virtual image because the reflected rays:
18. The wavelength of Red light is ________ than that of Violet light.
19. Multiple images in a thick glass mirror are formed due to ________ at the front surface and ________ at the back surface.
20. In an eclipse, the formation of shadows is due to the ________ propagation of light.