Bohr's Model of Atom

The Bohr orbit radius for the hydrogen atom (n = 1) is approximately  $0.530\AA .$  The radius for the first excited state (n = 2) orbit is  $(in\AA )$

A hydrogen atom in its ground state absorbs $10.2\mathrm{eV}$ of energy. What is the orbital angular momentum is increased by?

What will be the logest wavelength in the Balme series of Hydrogen?

What is the order of the radius of an electron orbit in a $\mathrm{H}-$atom?

The radius of the Bohr orbit depends on which of the following?

The value of Rydberg's constant is

In Bohr's model of hydrogen atom, linear momentum ($p_n$) of the electron depends on the principal quantum number ($n$) as:

Which are some of the postulates of Niels Bohr's for hydrogen atom?

According to Bohr's theory, what is conserved for an electron revolving around nucleus?

In hydrogen atom, electron jumps from the $3^{\mathrm{rd}}$ orbit to the $1^{\mathrm{st}}$ orbit. The change in angular momentum is _____.

In the hydrogen atom the ratio of wavelengths of the Balmer transition $\left(n=4\right)$ to $\left(n=2\right)$ to Lyman transition $\left(n=3\to n=1\right)$ is

If the ratio of frequencies of the first line of the Lyman series and first line of Balmer series is $\frac{\mathit{a}}{\mathit{b}}$. Here $a \text{and} b$ are co-prime numbers. Then, find the value of $a+b\mathit{.}$

The speed of an electron in the orbit of the hydrogen atom in the ground state is ($C$ is speed of light)-

The electric potential between a proton and an electron is given by $\text{V}={\text{V}}_0\text{ ln}\frac{\text{r}}{{\text{r}}_0}$ where r₀ is a constant. 

Assuming Bohr's model to be applicable, the variation of speed v_n of the electron with n is