List of top Physics Questions on Youngs double slit experiment asked in TS EAMCET

A wire of length \(L\) and cross-sectional area \(A\) has a Young's modulus \(Y\). If the wire is stretched by a force \(F\), the elongation produced in the wire is:
A wire of cross-sectional area \( 10^{-6} \, m^2 \) is elongated by \( 0.1 \% \) when the tension in it is \( 1000 \, N \). The Young's modulus of the material of the wire is (Assume radius of the wire is constant)?
In Young's double slit experiment, intensity of light at a point on the screen where the path difference becomes \( \lambda \) is I. The intensity at a point on the screen where the path difference becomes \( \frac{\lambda}{3} \) is,
A parallel beam of light of intensity \(I_0\) is incident on a coated glass plate. If \(25\%\) of the incident light is reflected from the upper surface and \(50\%\) of light is reflected from the lower surface of the glass plate, the ratio of maximum to minimum intensity in the interference region of the reflected light is