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Physics XI
Physics XI Content
General
WHAT IS PHYSICS?
INCLINED PLANE
TENSION IN THE STRING
Kinetic Molecular Theory of ...
STATES OF EQUILIBRIUM
VARIATION OF g -VARIATION ...
Types of Units
Special Units
Physics in Every Day ...
Problems Linear motion
To Find the volume ...
Refractive Index of material ...
Units in different systems
Numerical Problems-Bodies in vertical ...
Units and Dimensions Multiple ...
Units & Dimensions Q&A
What do you understand ...
Transfer of heat- Old ...
Question/Answer
How is surface tension ...
Define coefficient of viscosity.
Mention physical properties of ...
Why does boiling point ...
Give reason
What do you mean ...
What is the efect ...
The meniscus for mercury ...
Why is a mercury ...
What is evaporation? How ...
Name the physical property ...
UNIT 1 : MECHANICS
Units and Measurement – ...
SCALAR AND VECTOR
Scalar and Vector – ...
Addition of vectors by ...
PARALLELOGRAM LAW OF VECTOR ...
UNIT VECTOR-FREE VECTOR-POSITION VECTOR-NULL ...
Multiplication of two vectors
MULTIPLICATION & DIVISION OF ...
RESOLUTION OF VECTOR
ADDITION OF VECTORS BY ...
COMMUTATIVE LAW AND ASSOCIATIVE ...
Scalar Product
COMMUTATIVE LAW FOR DOT ...
DISTRIBUTIVE LAW FOR DOT ...
VECTOR PRODUCT
AREA OF PARALLELOGRAM
Vectors
Kinematics
Definitions -Kinematics
PROJECTILE MOTION
MAXIMUM VELOCITY OF PROJECTION
Kinematics Introduction and more…
Important formulas of Kinematics
Laws of Motion
Momentum
Law of Conservation of ...
ELASTIC AND INELASTIC COLLISION
Friction
Angle of Friction
Relation between Angle of ...
Work, Energy and Power
WORK
ENERGY
KINETIC ENERGY
LAW OF CONSERVATION OF ...
Circular Motion
CIRCULAR MOTION-ANGULAR MOTION-RADIAN
ANGULAR VELOCITY-ANGULAR ACCELERATION
RELATION BETWEEN LINEAR VELOCITY ...
COUPLE OF FORCE
Gravity and Gravitation
Gravitation
Relation between ‘g’ & ...
Variation of g due ...
Variation of ‘g’ due ...
Variation of ‘g’ due ...
GRAVITATION
Variation of ‘g’ due ...
TIME PERIOD – CENTRIPETAL ...
MASS OF EARTH
Black Hole
Equilibrium
STATICS
TORQUE- CENTRE OF GRAVITY
CENTRE OF MASS
Simple Harmonic Motion
Simple Harmonic Motion definition
Simple Harmonic Motion
Some Terms
(Motion + Time Period) ...
Motion of a Mass ...
Motion of a Projection ...
Instantaneous Velocity of Projection
Expression for Time Period
Expression for Frequency
Angular Momentum
Angular Momentum
LAW OF CONSERVATION OF ANGULAR MOMENTUM
LAW OF CONSERVATION OF ...
Elasticity
Elasticity and Plasticity
Stress
Strain
Elastic limit
Elastic after effect
Elastically fatigue
Elastic hysteresis
UNIT 2 : HEAT AND THERMODYNAMICS
HEAT
SYSTEM
Scales of Temperature
To prove P= NKT
SHOW THAT THE AVERAGE ...
PRESSURE-VOLUME WORK
THERMAL EXPANSION
Cubical Expansion
BIMETALLIC THERMOSTAT
Specific Heat – Method ...
MOLAR SPECIFIC HEAT
MOLAR SPECIFIC HEAT AT ...
GAS PRESSURE
Kinetic Theory of Gases
First Law of Thermodynamics
First law of thermodynamics
ISOTHERMAL PROCESS
ISOCHORIC PROCESS
Second Law of Thermodynamics
Caloriemetry
Heat capacity and specific ...
Water equivalent of a ...
UNIT 3 : GEOMETRICAL OPTICS
Image Formation by convex ...
ASTRONOMICAL TELESCOPE
Gallilean’s Telescope
UNIT 4 : ELECTROSTATICS
Fundamental Electrostatic Phenomena
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COUPLE OF FORCE
COUPLE OF FORCE
DEFINITION
Two forces which are equal in magnitude but opposite in direction and not acting along the same line constitute a couple.
Consider two equal and opposite forces
F
and
-F
acting oppositely along parallel lines on two points A and B as shown below:
Let and are their position vectors with respect to origin.
Magnitude of torque is given by:
= r
F
sin
q
Where
q
is the angle between and.
rsinq
is the perpendicular distance between the line of action of the two forces. Let it is denoted by
d
.
Thus, the magnitude of the torque of couple will be:
= Fd
Where
d
is called the moment arm of the couple.
Now
the magnitude of the couple = Magnitude of the forces forming couple X moment arm of couple
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