WB JEE 2021

A simple pendulum, consisting of a small ball of mass m attached to a massless string hanging vertically from the ceiling is oscillating with an amplitude such that Tmax = 2Tmin, where Tmax and Tmin are the maximum and minimum tension in th...

From dimensional analysis, the Rydberg constant can be expressed in terms of electric charge (e), mass (m) and Planck constant (h) as [consider \({1 \over {4\pi {\varepsilon _0}}} \equiv 1\) unit]

In Young's double slit experiment, light of wavelength \(\lambda\) passes through the double slit and forms interference fringes on a screen 1.2 m away. If the difference between 3rd order maximum and 3rd order minimum is 0.18 cm and the sl...

A block of mass m slides with speed v on a frictionless table towards another stationary block of mass m. A massless spring with spring constant k is attached to the second block as shown in figure. The maximum distance, the spring gets com...

The potential energy of a particle of mass 0.02 kg moving along X-axis is given by V = Ax (x \(-\) 4) J, where x is in metre and A is a constant. Which of the following statements is/are correct?