value of the refractive index of lens is 2.5 The curved surfaces are having The radius of curvature 10 cm and -12cm Out The focal length of the lens respectively find out the focal length of the lens, with solution plz answer ​

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

What part of the ear is names after tools, such as the hammer and the anvil?