The Bohr orbit radius for the hydrogen atom (\(n = 1\)) is approximately 0.530 \({Å}\). The radius for the first excited state (\(n = 2\)) orbit is (in \({Å}\)):
Viscosity is a property of?
In the following circuit, the equivalent resistance between X and Y is ...... \( \Omega \):
In the circuit shown in the figure, the AC source gives a voltage \( V = 20\cos(2000t) \). Neglecting source resistance, the voltmeter and ammeter readings will be:
A mosquito O is sitting in front of a glass rod having a spherical end of radius of curvature 40 cm. The image would be formed at:
The stopping potential (\(V_0\)) versus frequency (\(\nu\)) of a graph for the photoelectric effect in a metal is given. From the graph, the Planck's constant (\(h\)) is: