The Avogadro’s number is used to represent the number of elementary entities that exist in one mole of a compound.
<h3>What is the Avogadro’s number?</h3>
The Avogadro’s number is used to represent the number of elementary entities that exist in one mole of a compound. The numerical value of the Avogadro’s number is obtained as 6.02 x 10^23 and consists of the atoms, molecules and ions in the compound.
The scientist Josef Loschmidt strengthened the Avogadro’s number by obtaining the number of particles in one cubic centimeter of gas under standard conditions.
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Answer:
The magnetic field of the particle is 1.5 T.
(C) is correct option.
Explanation:
Given that,
Momentum of particle 
Radius = 1.0 km
Charge of the particle 
We need to calculate the magnetic field
Using relation of radius of path in magnetic field
Here mv = p

Put the value into the formula


Hence, The magnetic field of the particle is 1.5 T.
Explanation:
The square meter is the SI-derived unit of area. It has a symbol m² (33A1 in Unicode). It is defined as the area of a square whose sides measure exactly one metre.
I hope this helps. Your answer is D