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Showing posts with the label K12 PHYSICS

Can we accelerate neutron by cyclotron? Give reason

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Would we be able to speed up neutron by cyclotron? ANSWER: We can't speed up neutron by cyclotron. ABOUT CYCLOTRON The cyclotron was perhaps the earliest sort of particle accelerator and is as yet utilized as the primary phase of some huge multi-stage particle accelerators.Cyclotron comprises of two metallic empty chambers which are called Dees. An alternating voltage is applied between the two dees and furthermore a cross magnetic field is applied. ABOUT NEUTRON Neutron is a rudimentary molecule, which has no charge and its mass is somewhat more than the mass of a proton. Neutrons being unbiased, they are not repelled or drawn in by the core(nucleus) and the electrons of a molecule. REASON Cyclotron is a device used to speed up(accelerate) charged particles. Cyclotron chips away at the rule that a charged particle moving typical to a magnetic field encounters magnetic Lorentz force because of which the particle moves in a roundabout way and subsequently speeds up it. Since a neutr

Compound microscope numericals /K12 CBSE PHYSICS

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What is motional emf? Factors on which it depends & expression for motional emf

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MOTIONAL EMF : The emf actuated across the closures of a conductor because of its movement in a magnetic field is called motional emf. PFACTORS ON WHICH THE  MOTIONAL EMF DEPENDS: 1. Uniform magnetic field (B) 2. Velocity of the conductor moving in the U-moulded leading rails.(v) 3. Length of the conductor. (L) DERIVE AN EXPRESSION FOR THE MOTIONAL EMF INDUCED IN A CONDUCTOR  DESCRIPTION: Conductor PQ of length L is allowed to continue on a U-moulded leading rails. (Here the slidable conductor PQ is moved outwards with a speed v).When the conductor moved outwards the space of the rectangular circle increments and consequently the attractive transition connected with the shut circle increments. Thus,the magnetic flux linked with the closed-loop increases. An emf is set up across the conductor PQ due to which an initiated current stream in the anticlockwis e course (as displayed in the image).According to Faraday's law of electromagnetic induction the emf incited is - BLv MAGNETIC

INTERNAL RESISTANCE OF A LECHLANCHE CELL USING POTENTIOMETER

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HOW INTERNAL RESISTANCE OF A LECHLANCHE CELL IS CALCULATED USING A POTENTIOMETER ?

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INTERNAL RESISTANCE OF A LECHLANCHE CELL : CIRCUIT DIAGRAM: AB          -Potentiometer Bt            -Battery Eli K 1          K 1                      -Plug key in the primary circuit K 2            -Plug key in the   secondary circuit Rh           -Rheostat L (or) E   -Lechlanche cell H.R         -High Resistance G            - Galvanometer R            -Resistance box J 1 , J 2       -Pencil Jockey positions EXPERIMENTAL SET UP: SIMPLE CIRCUIT DIAGRAM : PROCEDURE: The circuit associations and the test set up are made as displayed previously. In the open circuit,when resistance is excluded (not included), the emf of the cell is deterimned by taking note of the balncing length.That is l 1 In the shut(closed) circuit, when the resistance is incorporated the balncing length is to be noted. That is    l 2 The trial is rehashed for various values of R and the readings are organized. Utilizing the equation the internal resistance of the given cell can be determined. TABULAR COLUMN: CALCULA

POTENTIOMETER EXPERIMENT/ K12 CBSE PHYSICS

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POTENTIOMETER EXPERIMENT/K12 CBSE PHYSICS COMPARISON OF EMF OF TWO CELLS: EXPERIMENTAL SET UP : CIRCUIT  DIAGRAM: CONDITIONS: SIMPLE CIRCUIT DIAGRAM: DOUBLE POLE DOUBLE THROW SWITCH CONNECTIONS : POTENTIAL GRADIENT : For better outcomes,utilize newly pre-arranged(freshly prepared) cell in any case, the polarization impact will happen which is segregating boundaries foster a connection point among cathode and electrolyte. The sensitivity of the potentiometer relies upon a potential gradient (K).If the potential gradient is little  then the potentiometer is supposed to be more precise and delicate. PROCEDURE: This is the least complex circuit and every one of the connections are made as displayed previously. Connect the positive terminals of the auxiliary battery and primary cells to point A of the potentiometer (zero point). To actually look at the rightness(correctness) of the circuit,the pencil jockey is pressed close to the end A and B of the potentiometer.If  the galvanometer show

PHYSICS K11 & K12

 

eBOOK ON PHYSICS

 

MOTIONAL EMF INDUCED CURRENT AND POWER USED

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KIRCHHOFF'S LAW NUMERICAL

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WHY CYCLOTRON CANNOT ACCELERATE ELECTRON?

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KIRCHHOFF'S LAW NUMERICAL

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KIRCHHOFF'S LAW NUMERICAL (PHYSICS)

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