physics notes for class 1

If the area of cross section was different from the area of cross section of the inner solenoid, the smaller one is to be considere..

If S in replaced by a white light, we see a whole series of colors since each colour has a different wavelength at a given point. It may be a constructive interference for one colour and destructive interference for another. Therefore the former colour alone is visibl..

The magnitude and direction of thermo emf in a thermo couple depends on the a) nature of the metals and b) temperature difference between the two junctions. Seebeck effect is a reversible effect. Each metal is characterized by a work function f which is the energy required to remove the hi..

SI unit of l is C/..

If A and B were at the same height i.e. h=0 then P 2 - P 1 =0 or P 1 = P 2 i.e., Pressure is same at all points inside a liquid lying on the same horizontal plane. If g = 0 at place, then P 2 = P 1 at any two points inside the liquid (Pascal's law neglecting ..

1) If = 0 o or 180 o then F = 0 (minimum) 2) If = 90 o then F = I x l x B (maxim..

2) If P lies on the conductor, dB = 0 3) If q = 90 o then dB is maximum 4) If q = 0 o or q = 180 o then dB is minimum Magnetic field due to a whole conductor is found by summing over all current elements...

(i) the magnitude of the smallest unit of charge is 1.6x10 - 1 9 C..

a) In the above derivation, we have assumed a unit north pole to be placed at P and that the magnetic field intensity is force experienced by that unit pole. This is the coulombian magnetic force. Where m 1 is pole strength of North Pole of a bar magnet and l represents the unit north..

If the object is very close to f o , the focus of lens O then and as A l B l is very close to the eye lens V o = O l B l O 1 O 2 = L = length of tube If f o and f e both are small then magnifying power will be lar..