Answer:
the primary coil current produces a magnetic field, which changes as the current changes. the iron core increases the strength of the magnetic field. the changing magnetic field induces a changing potential difference (voltage) in the secondary coil.
Radiation
When the sun radiation fall on the earth and it’s objects they receive heat energy and hence get heated thus the sun heat reaches the earth by = The process of radiation
66 g of element Y is needed since the ratio between element X and element Y is 1:2
Answer:
![w= 1.867\times10^{-2}](https://tex.z-dn.net/?f=w%3D%201.867%5Ctimes10%5E%7B-2%7D)
Explanation:
Given:
fibers diameter d= 18 μm
distance of the screen D= 30 cm
wavelength λ= 560 nm
we know that fringe width
![w=\frac{2\lambda D}{d}](https://tex.z-dn.net/?f=w%3D%5Cfrac%7B2%5Clambda%20D%7D%7Bd%7D)
putting values we get
![w=\frac{2\times560\times10^{-9}\times0.3}{18\times10^{-6}](https://tex.z-dn.net/?f=w%3D%5Cfrac%7B2%5Ctimes560%5Ctimes10%5E%7B-9%7D%5Ctimes0.3%7D%7B18%5Ctimes10%5E%7B-6%7D)
![w= 1.867\times10^{-2}](https://tex.z-dn.net/?f=w%3D%201.867%5Ctimes10%5E%7B-2%7D)