NATIONAL DEFENCE ACADEMY & NAVAL ACADEMY EXAMINATION (I), 2020 National Defence Academy & Naval Academy Examination, 2020 is the exam for admission to the Army, Navy and Air Force wings of the NDA. National Defence Academy is a premier joint training institution and center of excellence for grooming junior leaders for the Indian armed forces Read more about NATIONAL DEFENCE ACADEMY & NAVAL ACADEMY EXAMINATION (I), 2020[…]
Sum of Angles in Terms of tan⁻¹ – Part1 Theorem: , Proof: Let and , Where , , , , , From graph , , Where , = , , ⇒ x<0, y<0, , , , ⇒ x<(1/y), ⇒xy<1. Share Tweet View Email Print Follow
Types of Nuclei The entire positive charge and nearly the entire mass of atom are concentrated in a very small space called the nucleus of an atom. The nucleus consists of protons and neutrons. They are called nucleon. The nuclei have been classified on the basis of the number of proton or the total number Read more about Types of Nuclei[…]
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Direction of Magnetic Field The direction of magnetic field is determined with the help of the following simple laws: 1) Maxwell’s cork screw rule: According to this rule, if we imagine a right handed screw placed along the current carrying linear conductor, be rotated such that the screw moves in the direction of flow of Read more about Direction of Magnetic Field[…]
Properties of Triangle m – n Theorem m – n Theorem: Let D be a point on the side BC of Triangle ABC such that BD. DC = m: n and angle BAD = α, angle ADC = θ and angle DAC = β then (m + n) cot θ = n cot B – Read more about Properties of Triangle m – n Theorem[…]