A tightly wound 100 turns coil of radius $$10 \mathrm{~cm}$$ carries a current of $$7 \mathrm{~A}$$. The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as $$4 \pi \times 10^{-7} \mathrm{SI}$$ units):
In an ideal transformer, the turns ratio is $$\frac{N_P}{N_S}=\frac{1}{2}$$. The ratio $$V_S: V_P$$ is equal to (the symbols carry their usual meaning) :
The graph which shows the variation of $$\left(\frac{1}{\lambda^2}\right)$$ and its kinetic energy, $$E$$ is (where $$\lambda$$ is de Broglie wavelength of a free particle):
![NEET 2024 Physics - Dual Nature of Radiation and Matter Question 3 English Option 1](https://app-content.cdn.examgoal.net/fly/@width/image/1lvutdpp4/f6d8dc70-1b96-42fc-a257-9828e20c20fc/bc4d2d80-0b92-11ef-8001-8980c69654fa/file-1lvutdpp5.png?format=png)
![NEET 2024 Physics - Dual Nature of Radiation and Matter Question 3 English Option 2](https://app-content.cdn.examgoal.net/fly/@width/image/1lvute51s/42df3f7c-ae3c-4d1d-b29b-befc5aad9f9d/c8291100-0b92-11ef-8001-8980c69654fa/file-1lvute51t.png?format=png)
![NEET 2024 Physics - Dual Nature of Radiation and Matter Question 3 English Option 3](https://app-content.cdn.examgoal.net/fly/@width/image/1lvutehh3/9137b8d4-37e5-4acc-85d9-721371e9c42a/d1c23070-0b92-11ef-8001-8980c69654fa/file-1lvutehh4.png?format=png)
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Given below are two statements:
Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges.
Statement II: Atoms of each element are stable and emit their characteristic spectrum.
In the light of the above statements, choose the most appropriate answer from the options given below.