# Category Archives: Class 12

The electric potential at a place in an electric field is the amount of effort required to transport a unit positive charge from infinity to… Read More
If f(x) is a function that is required to be integrated, f(x) is called the Integrand, and the integration of the function without any limits… Read More
When an external force is used to remove a body from a situation. Point to another in the face of a force like spring or… Read More
A capacitor is an electrical component with a two-terminal that may store energy in the form of an electric charge. It is made up of… Read More
Science is a strange subject that never ceases to amaze you as new subjects are presented. We’re all aware that charge occurs everywhere around us… Read More
Question 1. If A is a singular matrix, then find the value of |A|. Solution: Given that A is a singular matrix. So, as we… Read More
Question 19. A bag contains 7 green, 4 white, and 5 red balls. If four balls are drawn one by one with replacement, what is… Read More
Question 1. There are 6% defective items in a large bulk of items. Find the probability that a sample of 8 items will include not… Read More
Question 37. An experiment succeeds twice as often as it fails. Find the probability that in the next 6 trials there will be at least… Read More
Question 38. Write the value of the determinant . Solution:  We have, A =  |A| =  On taking 2x common from R3 we get, |A| = … Read More
Question 19. Let A = [aij] be a square matrix of order 3 × 3 and Cij denote the cofactor of aij in A. If… Read More
Question 14. Find the equation of the plane passing through the intersection of the planes x – 2y + z = 1 and 2x +… Read More
Derivatives are used to measure the rate of change of any quantity. This process is called differentiation. It can be considered as a building block… Read More
Question 1. Show that the lines  and  intersect and find their point of intersection. Solution: Given that the coordinates of any point on the first line are … Read More
Question 1. Find the angle between the line     and the plane . Solution: Given that, the line is     and the plane is . So,  As we know… Read More