Optical centre is a point on the principal axis of the lens such that a ray of light passing through this point emerges parallel to its direction... View Article
unified atomic mass unit amu = 1/12 the mass of one carbon (C12) atom. By Avogadro's number 6.023 x 1023 We know that mass of 6.023 x 1023... View Article
A convex lens is a converging lens. In a convex lens, the rays of light traveling parallel to the principal axis actually converge at a... View Article
Given, EMF of battery=10v Internal rssitance of battery, r=3 ohms Current in the circuit, I=0.5A Resistanc of the resistor=R By Ohm's law,... View Article
The boiling point of water on the Kelvin scale is 373.2K. Each division in the kelvin scale called a kelvin (K) is equal to a degree on the... View Article
The examples are: (i) Linear motion :Motion of train on railway track, Motion of football on ground surface (ii) Spinning motion : Rotating... View Article
Given, Rahul purchased 7 DVDs each of which costs Rs.17. Therefore, the total cost of 7 DVDs = 7 x 17 = 119 He gave a five hundred rupee note... View Article
The condition for intersection lines is that both should be on the same plane. If a1x+b1y+c1=0 and a2x+b2y+c2=0 are two intersecting lines,... View Article
Given Long side of rectangular field is 60 metres more than the shorter side Let the longer side = (y+30) m And the length of the diagonal... View Article
As we know, real numbers are the collection all the numbers such as natural and whole numbers, rational and irrational numbers. Since, we can... View Article
