1. Which of the following can make a parallel beam of light when light from a point source is incident on it?
2. A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is
3. Under which of the following conditions a concave mirror can form an image larger than the actual object?
4. Figure 10.1 shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is
5. A light ray enters from medium A to medium B as shown in Figure 10.2. The refractive index of medium B relative to A will be
6. Beams of light are incident through the holes A and B and emerge out of box through the holes C and D respectively as shown in the Figure10.3. Which of the following could be inside the box?1. Which of the following can make a parallel beam of light when light from a point source is incident on it?
7. A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as shown in the Figure 10.4. Which of the following could be inside the box?
8. Which of the following statements is true?
9. Magnification produced by a rear view mirror fitted in vehicles
10. Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?
11. A full length image of a distant tall building can definitely be seen by using
12. In torches, search lights and headlights of vehicles the bulb is placed
13. The laws of reflection hold good for
14. The path of a ray of light coming from air passing through a rectangular glass slab traced by four students are shown as A, B, C and D in Figure 10.5. Which one of them is correct?
15. You are given water, mustard oil, glycerine and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most?
16. Which of the following ray diagrams is correct for the ray of light incident on a concave mirror as shown in Figure 10.6?
17. Which of the following ray diagrams is correct for the ray of light incident on a lens shown in Fig. 10.7?
18. A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.
19. In which of the following, the image of an object placed at infinity will be highly diminished and point sized?
