SureDen
Question 1: Prove the following by using the principle of mathematical induction for all n ∈ N:
1 + 3 + 32 + … + 3n-1
Question 1: Let A=0
It is a device which works on AC. It is used to increase as decrease the magnitude of alternate voltage as alternating current.
Principle :-
Question 1: How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and 5 assuming that
(i) repetition of the digits is allowed?
11.12 Applications of Bernoullis Theorem.
(i) Attraction between two closely parallel moving boats (or buses) : When two boa
Heisenberg’s uncertainty principle- given by Warner Heisenberg
“It is impossible to meas
Filling of Orbitals in atoms-
Aufbau principle – aufbau = German word means building up.
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Question 1: How many 3-digit numbers can be formed by using the digits 1 to 9 if no digit is repeated?
Answer 1: 3-digit numbers h
Question 1: If nC8 = nC2, find nC2
Answer 1: It is known that,
The displacement at any time due to any number of waves meeting simultaneously at a point in a medium is the vector sum of the individual displacements due each one of the wav
Super position principle:-
“According to this principle, when two or more waves travelling through a medium superimpose each other, a new wav
Hardy-Weinberg principle: This principle says that allele frequencies in a population are stable and is constant from generation to generation. The gene pool
EMF can be induced by every that mean is which flux linked with the conductor became varying.
EMF induced in a straight conductor moving in the magnetic field.
φ =BA
PRE Board E
Electrical capacitance of a conductor:
It is the measure of its ability to hold the electric charge.
If a charge Q on an conductor incre
Evidences in Favors of Bohr model
Stability of an atom – According to Bohr electron revolving around the nucleu
It states that if gravity effect is neglected, the pressure at every point of liquid in equilibrium of rest is same.
# Lens:
A Lens is a combination of two refracting surfaces out of which at least one is curved
Types of Lenses:
Wave Optics
Light:- light is a form of energy which gives the sensation of sight.
Optics:- opti
Law’s of reflection (on the basis of Huygen’s principle)
let AB=> plane wave front incident on a plane mirror M1M2
Potentiometer: A potentiometer is a device to measure an unknown emf or potential difference accurately.
Construction: a potentiom
Discoveries regarding genetic marerial:
Transforming Principle
Frederick Friffith
It states that the force of attraction or repulsion between two stationary point charges is
Directly proportional to the product of the magnitudes of the two
Application of Dimensional Analysis.
(1) To find the unit of a physical quantity in a given system of units : In a dimensional formula, replacing M, L and T by the fundamental units of the required system we can get the un
SOLUTIONS
A solution is a homogeneous mixture to two or more chemically non reacting substance whose composition can be varied with in certain lim
Crushing and Grinding of the ore:- the ores occur in nature as huge lumps. They are broken to small pieces with the help of crushers and grinders. The p
A coordinate bond is formed,When the shared electron pair is provided by one of the combining atoms.
The atom, which provides the electron pair is termed as the donor atom, while
the other atom, which accepts it, is termed as the
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