WB JEE 2024

Let \(\theta\) be the angle between two vectors \(\vec{A}\) and \(\vec{B}\). If \(\hat{a}_{\perp}\) is the unit vector perpendicular to \(\vec{A}\), then the direction of $$
\overrightarrow{\mathrm{B}}-\mathrm{B} \sin \theta \hat{\mathrm{a}...

Light of wavelength \(6000 \mathop A\limits^o\) is incident on a thin glass plate of r.i. 1.5 such that the angle of refraction into the plate is \(60^{\circ}\). Calculate the smallest thickness of the plate which will make dark fringe by r...

In a single-slit diffraction experiment, the slit is illuminated by light of two wavelengths \(\lambda_1\) and \(\lambda_2\). It is observed that the \(2^{\text {nd }}\) order diffraction minimum for \(\lambda_1\) coincides with the $$3^{\t...

Longitudinal waves cannot

The following figure shows the variation of potential energy \(V(x)\) of a particle with distance \(x\). The particle has