Two thin lenses of power + 4D and –2D are in contact.

power 4d Answer:the power of a convex lens is always positive. as you can see here the power is +4D, therefore the nature of the lens is that it is a convex lens. we know, P = 1f. also. Power 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

power4d, Two lenses have power of (i) + 2 d (ii) -4D. What is the nature and focal length of each lens? b. An object is kept at a distance of 100 cm from lens of power -4D. Calculate the image distance..