Significant Figures

Significant Figures Significant figures in the measured value of a physical quantity tell the number of digits in which we have confidence. Larger the number of significant figures obtained in a measurement, greater is the accuracy of the measurement. The reverse is also true. The number of significant figures in a result is simply the Read more about Significant Figures[…]

Incircle and Incenter

Incircle and Incenter Distance of the Incenter from the Vertex: In triangle ABC ,    ,                                                            , , Similarly, , Length of Tangent from Vertices to the Incircle: In triangle , = s – b BD = BF = s – b Similarly, AF = AE = s – a And CD = CE = Read more about Incircle and Incenter[…]

Different Circles and Centers Connected with Triangle – Part2

Different Circles and Centers Connected with Triangle – Part2 Incircle and Incenter: The point of intersection of the internal bisectors of a triangle is called the incenter of the triangle. Also, it is the center of the circle touching all the three sides internally. Incenter always lies inside the triangle. Point AFIE, BDIF, and CEID Read more about Different Circles and Centers Connected with Triangle – Part2[…]

Transition of an Electron

Transition of an Electron When an electron makes transition from higher energy level having energy   to a lower energy level having energy  then a photon of frequency is emitted. 1) Energy of emitted radiation: , . 2) Frequency of emitted radiation: . 3) Wave number/Wavelength: Wave number is the number of waves in unit length, Read more about Transition of an Electron[…]

Dayananda Sagar Admission Test (DSAT-2020) Exam Dates Released

Dayananda Sagar Admission Test (DSAT-2020) Exam Dates Released Dayananda Sagar Admission Test (DSAT-2020). Dayananda Sagar University(DSU) is a private university located at Hongasandra Village, Begur Hobli, Bengaluru, Karnataka. DSU inviting applications from the candidates who wants to join in DSU for admisions into B.Tech programmes for the academic year 2020 through Dayananda Sagar Admission Test(DSAT)-2020. Read more about Dayananda Sagar Admission Test (DSAT-2020) Exam Dates Released[…]

Different Circles and Centers Connected with Triangle – Part1

Different Circles and Centers Connected with Triangle – Part1 Circumcircle and Circumcenter: The circle passing through the angular point of Triangle ABC is called its circumcenter. The center of this circle is the point of intersection of the perpendicular bisectors of the sides and is called the circumcenter. its radius is denoted by R. Circumcenter Read more about Different Circles and Centers Connected with Triangle – Part1[…]

Indian Statistical Institute(ISI) 2020 Exam Dates Released

Indian Statistical Institute(ISI) 2020 Exam Dates Released Indian Statistical Institute (ISI), a unique P. C. Mahalanobish institution devoted to the research, teaching and application of statistics, natural sciences and social sciences. Founded by Professor P.C. Mahalanobis in Kolkata on 17th December, 1931, the institute gained the status of an Institution of National Importance by an Read more about Indian Statistical Institute(ISI) 2020 Exam Dates Released[…]

Properties of X – Rays

Properties of X – Rays X – Rays were discovered accidentally by German Scientist Rontgen in 1895. The first Nobel Prize was awarded to Rontgen in 1901. This highly penetrating electromagnetic radiation has proved radiography of metal and in medical sciences. X – Rays are basically a type of radiations. They are also sources of Read more about Properties of X – Rays[…]

General Solution of Equation cos²θ = cos²α

General Solution of Equation cos²θ = cos²α General Solution of Equation cos²θ = cos²α (or) sin²θ = sin²α: cos²θ = cos²α (since cos²θ + sin²θ = 1 ⇒ cos²θ = 1 – sin²θ)  (1 – sin²θ) = (1 – sin²α) (1 – sin²θ) – (1 – sin²α) = 0 sin²θ = sin²α sin²θ – sin²α Read more about General Solution of Equation cos²θ = cos²α[…]

Characteristics of Matter Waves

Characteristics of Matter Waves According to de-Broglie a moving material particle sometimes acts as a wave and sometimes as a particle. The wave associated with moving particle is called matter wave or de-Broglie wave and it propagates in the form of wave packets with group velocity. 1) Matter wave represents the probability of finding a Read more about Characteristics of Matter Waves[…]