Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

(1)

Where K is thermal conductivity

Difficulty Level:

  • 45%
  • 26%
  • 23%
  • 7%

Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

mcxGy.hzML°T°=LT-1x.M-1L3T-2y.ML2T-1zML°T°=M-y+z.Lx+3y+2z.T-x-2y-zOn comparing dimensions on both sides:       -y+z=1                  ........i       x+3y+2z=0           ........ii       -x-2y-z=0          ........iiiii+iii-    y+z=0                     y=-zput it in euqation i                     +z+z=1                     z=+12                     y=-12                     x=12Hence m c12G-12h12

Difficulty Level:

  • 21%
  • 30%
  • 42%
  • 8%

Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

Surface tension S =ForceLength=MLT-2L=MT-2Let  Surface tension S =k ExVyTzPutting dimensions on both sides,[MT-2] = [ML2T-2]x[LT-1]y[T]zComparing powers  of M, L and T on both sides1 =x                                   ....... Power of M0 =2x + y                                    ..... Power of L            y= -2x = -2   -2 = -2x -y +z                   ........... ..... Power of Zz= 2x +y -2    =2 -2 -2 = -2Putting values of x, y and z in above formulaS =k E1V-2T-2

Difficulty Level:

  • 16%
  • 58%
  • 18%
  • 11%

        [Only for Dropper batch]  

Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

V =LitTherefore , L =Vti

Also, V=iRTherefore R =Vi

so, LR= VtiVi=t

Difficulty Level:

  • 44%
  • 24%
  • 26%
  • 9%

Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

(4)

Q=mLL=Qm=ML2T-2M=M0L2T-2

Difficulty Level:

  • 29%
  • 19%
  • 18%
  • 36%

    [Only for dropper batch]

Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

(3)

Electrostatic pressure = 12oE2Dimension of Pressure = ML-1T-2Electromagnetic energy per unit volume = B22μoDimension = EnergyVolume=ML2T-2L3 =ML-1T-2    same as pressure

Difficulty Level:

  • 27%
  • 18%
  • 40%
  • 18%

Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

Difficulty Level:

  • 12%
  • 21%
  • 66%
  • 4%

Light year is a unit of    

(1) Time

(2) Mass

(3) Distance

(4) Energy

Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

(3) Light year is a distance which light travels in one year.

Difficulty Level:

  • 24%
  • 6%
  • 64%
  • 8%

The magnitude of any physical quantity

(1) Depends on the method of measurement

(2) Does not depend on the method of measurement

(3) Is more in SI system than in CGS system

(4) Directly proportional to the fundamental units of mass, length and time

Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

(2) Because magnitude is absolute.

Difficulty Level:

  • 26%
  • 27%
  • 13%
  • 36%

Which of the following is not equal to watt 

(1) Joule/second

(2) Ampere × volt

(3) (Ampere)2 × ohm

(4) Ampere/volt

Concept Videos :-

#1 | Basic Concepts & Examples
#2 | Dimensional Analysis : Remaining

Concept Questions :-

(4)

Power=EnergyTime = Joule/second  = WattAlso for resistance R, Power = Voltage X Current =Ampere × volt =WattAlso, Voltage = Current X Resistance Power = Current2 X Resistance = Ampere2 × Ohm = Watt

 

Difficulty Level:

  • 22%
  • 16%
  • 29%
  • 35%