Figure represents observed intensity of X- rays emitted by an X- ray tube, as a function of waveleng

English

Gujarati

Hindi

12.Atoms

normal

The figure represents the observed intensity of $X-$rays emitted by an $X-$ray tube, as a function of wavelength. The sharp peaks $A$ and $B$ denote

band spectrum

continuous spectrum

characteristic spectrum

white radiation

Solution

In $X-$ray spectra, depending on the voltage and element, we may find several peaks on the continuous spectrum. These are at different wavelengths for different elements . They form characteristic $X$ – ray spectrum. Sharp peaks $A$ and $B$ denote characteristics $X-$ rays.

Standard 12

Physics

Hydrogen $(H)$, deuterium $(D)$, singly ionized helium $(He^+)$ and doubly ionized lithium $(Li^{++})$ all have one electron around the nucleus. Consider $n = 2$ to $n = 1$ transition. The wavelengths of emitted radiations are $\lambda_1, \lambda_2 \lambda_3$ and $\lambda_4$ respectively.

normal

If in nature there may not be an element for which the principal quantum number $n > 4,$ then the total possible number of elements will be

medium

(IIT-1983)

The absorption transitions between the first and the fourth energy states of hydrogen atom are $3.$ The emission transitions between these states will be

normal

In the result of the Geiger-Marsden experiment, by which the trajectory of the $\alpha $ -particle can be calculated ?

easy

Assertion: The specific charge of positive rays is not constant.
Reason: The mass of ions varies with speed.

easy

(AIIMS-1999)

The figure represents the observed intensity of $X-$rays emitted by an $X-$ray tube, as a function of wavelength. The sharp peaks $A$ and $B$ denote

Solution

Similar Questions

Hydrogen $(H)$, deuterium $(D)$, singly ionized helium $(He^+)$ and doubly ionized lithium $(Li^{++})$ all have one electron around the nucleus. Consider $n = 2$ to $n = 1$ transition. The wavelengths of emitted radiations are $\lambda_1, \lambda_2 \lambda_3$ and $\lambda_4$ respectively.

If in nature there may not be an element for which the principal quantum number $n > 4,$ then the total possible number of elements will be

The absorption transitions between the first and the fourth energy states of hydrogen atom are $3.$ The emission transitions between these states will be

In the result of the Geiger-Marsden experiment, by which the trajectory of the $\alpha $ -particle can be calculated ?

Assertion: The specific charge of positive rays is not constant. Reason: The mass of ions varies with speed.

Start a Free Trial Now

Assertion: The specific charge of positive rays is not constant.
Reason: The mass of ions varies with speed.