IIT JEE : Ray Optics And Optical Instruments QUESTIONS AND ANSWERS :: part1 : 26 to 30
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
26.One can not see through fog because: |
| fog absorbs light |
| light is scattered by the droplets in fog |
| light suffers total internal reflection by the droplets in fog |
| the refractive index of fog is infinity |
27.Arrange the following in ascending order of frequency. |
| Red, blue, yellow, green |
| Blue, green, yellow, red |
| Red, yellow, green, blue |
| Red, green, yellow, blue |
28.The focal length of convex mirror is 20 cm, its radium of curvature will be: |
| 10 cm |
| 20 cm |
| 30 cm |
| 40 cm |
29.Ray optics fails when the size of the obstacle is: |
| 5 cm |
| 3 cm |
| less than the wavelength of light |
| A and B both |
More Ray Optics And Optical Instruments QUESTIONS AND ANSWERS available in next pages
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