multiplying negative powers

>The distance between the image and the lens is negative as the image is virtual. The lens formula for a convex lens is Where f is the focal length of the lens Multiplying both sides of the equation (1) by v we g..

Power of a Lens - Whenever a ray of light passes through a lens (except when it passes through the optical center) it bends. The bending of light rays towards the principal axis is called convergence and bending of light rays away from the principal axis is called divergence. The degree o..

1D If there is convex lens of power 1 D then its focal length is equal 1 metre. The power of a convex lens is positive and concave lens is negative. If the focal lengths of the individual lenses f 1 f 2 are f 1 , f 2 ....... then the focal length of the equivalent lens..

The magnifying power of a compound microscope is defined as the ratio of the size of the final image (I 2 ) as seen through the microscope to the size of the object as seen with a naked eye. Image Formation in a Compound Microscope = m o b j e c t i v e x m e y e p i e c e = m o x m e Whe..

Summary - Machine is a device that is used to multiply force, or to gain speed, or to change the direction of a force, or transform energy. Levers, pulleys, inclined plane and gears are some of the examples of simple machine..

What should be the sign of the integers, if the product of the two integers is positive? => Either both the integers should be positive or both negative. or Multiplier is positive and multiplicand is negative. or Multiplier is negative and multiplic..

Application of Electrochemical Series [ECS] - 1) Higher the SRP, greater is the tendency to accept e - , higher is the tendency to get reduced and greater is the oxidizing power. Fluorine system (F 2 /F) - has the highest SRP and hence it possesses highest oxidising power and th..

Gears - Gears are like a continuously rotating lever. By using different sizes of wheels, and different numbers of teeth, you can use gears as force multipliers or as distance multipliers. Figure above shows two cogs one with twice as many teeth as the other. The cog teeth fit t..

Problems - 1. The electrode potentials A, B, C and D are 2.52 V, -0.16V, + 1.3V and 3.01V respectively. On the basis of this name the following: a) Most electro positive ----------> D b) Most electro negative -----------> C c) Highest reducing power -----------> D d) Hi..

In these type of levers the load is situated between fulcrum and effort.(shown in the figure belo..