# Question

A plastic convex meniscus (Fig. 23.14) contact lens is made of plastic with an index of refraction of 1.55. The lens has a front radius of 2.50 cm and a back radius of 3.00 cm.

(a) The signs of R1 and R2 are (1) +, +, (2) +, -, (3) -, +, (4) -, -. Explain.

(b) What is the focal length of the lens?

(a) The signs of R1 and R2 are (1) +, +, (2) +, -, (3) -, +, (4) -, -. Explain.

(b) What is the focal length of the lens?

## Answer to relevant Questions

(a) When you stand between two plane mirrors on opposite walls in a dance studio, you observe (1) one, (2) two, or (3) multiple images. Explain. (b) If you stand 3.0 m from the mirror on the north wall and 5.0 m from the ...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 ...Two lenses, each having a power of + 10 D, are placed 20 cm apart along the same axis. If an object is 60 cm from the first lens (not in between the lenses), where is the final image relative to the first lens, and what are ...(a) In a double-slit experiment, if the distance from the double slits to the screen is increased, the separation between the adiacent maxima will (1) increase, (2) decrease, (3) remain the same. Explain. (b) Yellow-green ...In the development of Young’s double-slit experiment, a small-angle approximation (tan θ ≈ sin θ) was used to find the lateral displacements of the maxima (bright) and minima (dark) positions. How good is this ...Post your question

0