IIT JEE : Ray Optics And Optical Instruments QUESTIONS AND ANSWERS :: part2 : 21 to 25
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
21.If distance between the wheel and mirror is d then the velocity of light is: (Given that m be the number of teeth and n the number of revolutions made in one second). |
| mnd |
| 2 mnd |
| 3 mnd |
| 4 mnd |
22.A man wants to distinguish between two pillars located at a distance of 11 km. What should be the minimum distance between pillars? |
| 3.2 m |
| 1.2 m |
| 1.1 m |
| 1.8 m |
23.An electron microscope gives better resolution than optical microscope because: |
| electrons are abundant |
| electrons can be focused nicely |
| effective wavelength of electron is small |
| none of the above |
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