1. | An object at a distance of 30 cm from a concave mirror gets its image at the same point. The focal length of the mirror is ? | |
2. | If an incident ray passes through the focus, the reflected ray will ? | |
3. | The Angle of reflection is equal to the angle of incidence ? | |
4. | Magnification produced by a rear-view mirror fitted in vehicles ? | |
5. | When object moves closer to a concave lens the image by it shift ? | |
6. | The image formed by concave mirror is real, inverted and of the same size as that of the object. The position of object should be ? | |
7. | For a real object, which of the following can produce a real image ? | |
8. | The angle of incidence for a ray of light having 45° reflection angle is ? | |
9. | In which of the following, the image of an object placed at infinity will be highly diminished and point sized ? | |
10. | The refractive index of a medium with respect to vacuum is ? | |