Posts

^Rest & motion

/in /by

^Rest & motion

If position of body changes w.r.t. surroundings with the time then it is said to be moving otherwise at rest. Rest & motion are relative. A person sitting in a moving vehicle is at rest w.r.t. other persons in sitting same vehicle while is in motion w.r.t. other persons standing on road. If the position of a body doesn’t change with respect to all objects in the universe, then it is said to be in absolute rest. Absolute rest is impossible. If the position of a body doesn’t change with respect to one or more things in the universe, then it is said to be in relative rest. Relative rest is possible.

^Parallel combination of resistors

/in /by

Parallel combination of resistors

The voltage is same across each circuit element is same but current is different & is inversely proportional to resistance of that part.

V = V1 = V2 = V3 = I1R1 = I2R2 = I3R3

&

Fact the maximum number of combination one can have, using all n – resistors at a time is:

(a)  2 (n – 1)      [For n – identical resistors

(b) 2n                    For n – different resistors

^Astronomical Unit (AU)

/in /by

^Astronomical Unit (AU)

It is the mean distance of the Earth from the Sun.

1 AU = 1.496 x 1011 m » 1.5 x 1011 m

 

^Limitations of dimensions

/in /by

^Limitations of dimensions

  • Dimensional analysis does not give any information about the scalar or vector nature of the quantity.
  • Dimensions for    v = u + at etc. can’t be calculated in exact form.
  • Dimensional formulae of the quantities depending on more than three variables cannot be obtained.
  • Dimensional formulae of the quantities involving trigonometric logarithmic or exponential functions cannot be calculated.
  • Value of proportionality constant can’t be calculated.

It doesn’t distinguish between the physical quantities having same dimensions.

*Dimensional Constants

/in /by

*Dimensional Constants

All constants are not dimensionless. The physical quantities which have constant values and dimensions as well are called dimensional constants.

e.g. Planck’s constant, Boltzmann’s constant & Gravitational constant etc.

*One steradian

/in /by

*One steradian

One steradian (sr)is the solid angle subtended at the centre of a sphere by that surface of the sphere which is equal in area to square of the radius of the sphere.

         

^Standard integrals

/in /by

^Standard integrals

 

*Inverse function

/in /by

*Inverse function

Function of the form,

have the shown variation. All the curves pass through the point (1, 1). For n > 1 the graph lies above the rectangular hyperbola

(n =1) in the region

0 < x < 1 and then lies below it in the region x > 1. For 0 < n < 1 the graph first lies below the hyperbola in the region 0 < x < 1 and then lies above the hyperbola in the region x > 1.

*Vertical line

/in /by

*Vertical line

Function x = a represents a vertical line located right side of y axis if a = +ve & left side of y axis if a = – ve.

*Arithmetic progression

/in /by

*Arithmetic progression

About us

Our objective is to create a situation where students will find Physics interesting & the strongest subject helping them to achieve top ranks in competitive exams.

Get Consultation Send us a message

Courses We Offer

  • Foundation courses
  • NEET & AIIMS MBBS Entrance
  • Test series
  • JEE Main & Advance

Contact Details

  • Address

    SCO 156, Level 2, Sector 37 C, Chandigarh
    SCO 34, Level 2, Sector 20 C, Chandigarh

  • Contact

    (+91) 987-266-2552, (0172) 466-2552

Copyright © 2021 KP Institute of Physics | Powered by RiAcube

error: Content is protected !!
Call 9872662552