Two thin lenses of power +4 D and -2 D are in contact. What is

power 4dGiven, Power of convex lens=4D. Placed at 40 cm from a wall. To Find, Distance of a candle. Solution, It is given that ,Power = 4D. Then, P = 1f. So, 4 D = 1fPower dsp 4ch value_acoustics VA 15.4D Daya output: 4x 1500watt @8ohm, 4x 2000watt @4ohm Bridge 2x 3800watt @8ohm Input: analog, aes ebu, dante Output