# Question

A biconvex lens is made of glass whose index of refraction is 1.6. The lens has a radius of curvature of 30 cm for one surface and 40 cm for the other. Calculate the focal length of this lens as used in air and under water.

## Answer to relevant Questions

A lens made of fused quartz (n = 1.46) has a focal length of +45 when it is in air. (a) If the lens is immersed in oil (n = 1.50), the lens will (1) remain con-verging, (2) become diverging, (3) have an infinite focal ...A student is given a piece of glass (n = 1.60) to make a symmetrical biconvex lens so it can form an image with a magnification of when the object is 5.00 m from the lens. What should be the radius of curvature of the lens ...Explain why the sky may be red in the morning and evening and blue during the day. Light of wavelength 550 nm in air is normally incident on a glass plate (n = 1.5) whose thickness is 1.1 x 10-5 m. (a) What is the thickness of the glass expressed in terms of the wavelength of light in glass? (b) How many ...An air wedge such as that shown in Fig. 24.30 can be used to measure small dimensions, such as the diameter of a thin wire. (a) If the top glass plate is illuminated with monochromatic light, the interference pattern ...Post your question

0