MBD Group

1  Measurement The process of measurement is basically a comparison process. To measure a physical quantity,  we have to find out how many times a standard amount of that physical quantity is present in the quantity being measured. The number thus obtained is known as the magnitude and the standard  chosen is called the unit of the physical quantity. 2   Unit The unit of a physical quantity is an arbitrarily chosen standard which is widely accepted by the  society and in terms of which other quantities of similar nature may be measured. 3  Standard The actual physical embodiment of the unit of a physical quantity is known as a standard of that  physical quantity. •  To express any measurement made we need the numerical value (n) and the unit ( μ ).  Measurement of physical quantity = Numerical value x Unit For example: Length of a rod = 8 m where 8 is numerical value and m (metre) is unit of length. 4  Fundamental Physical Quantity/Units It is an elementary phys

A journey of six decades started from a single bookshop has set up numerous milestones. MBD group has come up as the leading publishing house in India. With its own printing houses, there has been provided uncountable good and comprehensive books for the students of all the classes. Safalta ka sadhan books are one of the best series that has been published by MBD Group, keeping the essence of the qualitative approach of the group. Student’s life and books are unified together since ages. Books always have been considered a medium to gain knowledge and build the mental skills of a person. Feeding on a good book is nutrition to the gray matter of a person.  Sometimes it is observed that books define the perception of a person. Better is the book, sharpened are the skills of a person. Swotting up the content does not ensure the success of a student. It is the quality of content in terms of being informative yet student-centric that affects the education of students. The content