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
