NCERT 12 Physics Semiconductor Electronics Materials, Devices And Simple Circuits Chapter 14 Exercise

Q.1. In n- type which of the following statement is true: (a) Electrons are majority carriers and trivalent atoms are the dopants (b) Electrons are minority carriers and pentavalent atoms are the dopants (c) Holes are minority carriers and pentavalent atoms are the dopants (d) Holes are majority carries and trivalent atoms are the dopants […]

NCERT 12 Physics Dual Nature Of Radiation And Matter Chapter 11 Exercise

Q.1. find the (a) maximum frequency and (b) minimum wave-length of X- rays produced by 30 KV electrons. Given, h = 6.6310-34 Js. Q.2. the work function of caesium metal is 2.14 eV. When light of frequency 6⨯1014 Hz is incident on the metal surface, photoemission of electrons occurs. What is the (a) maximum kinetic […]

NCERT 12 Maths Solutions of Inverse Trigonometric Functions – Chapter 2 (Ex.2.1)

NCERT 12 Maths Inverse Trigonometric Functions – Chapter 2 (Ex.2.1), NCERT Class 12 maths chapter 2 solutions. Direction (Q. No. 1 to 10) Find the principal values of the following questions. Direction (Q. Nos. 11 to 14) Find the values of the following questions: Direction (Q. Nos. 11 to 14) Find the values of the […]

Biology 12 Organism and Populations Chapter 13 – Exercise

Biology 12 Organism and Populations Chapter 13 – Exercise, Q 1. How is diapause different from hibernation? Ans 1. Hibernation is the phenomenon commonly depicted by ecothermal (cold-blooded) animals which escape cold by hiding them in shelters such as caves, burrows, cervices, hollow thee trunks, mud etc. revealing minimum physiological activity. This phenomenon is also […]

NCERT 12 Physics Magnetism And Matter Chapter 5 Exercise

Q.1. Answer the following questions regarding earth’s magnetism. (a) A vector needs three quantities for its specification. Name the three independent quantities conventionally used to specify the earth’s magnetic field. (b) The angle of dip at a location in southern India is about 180. Would you expect a grater or lesser dip angle in Britain […]