env 2 cases

Let MM and MM' be two plane mirrors inclined at an angle 120 o and O be the object placed in between these mirrors. In this case there will be only two images viz., O 1 and O 2..

When two sides and the angle included between these are give..

For cubic crystals of ionic compounds (NaCl, ZnS). The formula is the same except that now, Z is the Number of formula units present in one unit cell and M is Formula mass. The above equation involves five parameters. Knowing any four, the fifth can be calculated. With the help of the above form..

For a pure inductor in AC circuit, cos q = 90 o P = O. i.e., Average power over a complete cycle of AC through an ideal inductor is zero. i.e., whatever energy is needed in building up current in L is returned back during the decay of the current. The shaded portion of the graph indicates th..

If D = 0 and all D 1 , D 2 and D 3 are zeros, this system has either infinite solution or no solution. In this case, put x = k(y = k or z = k), in any two of the equations, find y and z in terms of k. Substitute these values of x, y and z in terms of k, in the third..

When two positively charged bodies are involved, the electric lines of force gives a vivid picture of mutual repulsion. ..

In the case of two equal and opposite charges, the lines of force clearly shows mutual attraction, the lines move from +ve to -ve. Unlike Charges ..

C divides AB internally. Let A (x 1 , y 1 ) and B (x 2 , y 2 ) be the two points joined by line segment AB. Let C (x, y) be the point on the line segment such that (In this case, AC and CB are real in the same direction on the line AB.) Draw AP, CR and ..

Now let us consider the mirrors MM and MM' to be mutually perpendicular. In this case the number of images formed by the mirror ..