12th Class PHYSICS Online Quiz Chapter No.9 ATOMIC SPECTRA

The magnitude of ionization of hydrogen is:

Balmer series contains the wavelength given by the formula:

The speed of the electron in the first Bohr orbit is:

Which of the following is an example of line spectra?

Which of the following is an example of continuous spectra?

En-Ep = hf, where hf is the energy of:

The relation between Rydberg constant(RH) and ground state energy (En) is given by the relation:

Ionization energy of Hydrogen atom m first exited stated is:

X-Rays and gamma rays of the same wavelength and intensity can be differentiated by observing:

In the spectrum of which of the following will you find Balmer series:

An is equal to:

Electrostatic force between the electron and the nucleus of hydrogen atom is given by:

In the state n = ? of hydrogen atom, total energy of electron is:

Which of the following is an example of band spectra?

The reverse process of photoelectric effect is called

Radiation with wavelength greater than red light is called:

When electron in hydrogen atom jumps from higher orbit into fifth orbit, the set of lines emitted is called

Pfund series contains the wavelength given by the forumula:

The spectral series were identified in the spectrum of hydrogen by:

K? characteristics X-Rays are produced due to the transition of the electrons:

Balmer series contains the wavelength in the:

The line spectrum of hydrogen atom contains the spectral lines in the region:

Which of the following shell is closest to nucleus

X-Rays are:

The energy of the 4th orbit in hydrogen atom is:

The continuous X-Rays spectrum is obtained due to:

The continuous X-Rays spectrum is due to an effect known as:

Which of the following is the spectral series of atomic hydrogen?

A X-Rays Photon produced due to transition of electron from M-Shell to K-Shell is called:

CAT stands for:

When an electron exists in its lowest state, it is called:

If the ionization energy of hydrogen atom is 13.6eV, the ionization potential will be:

J.R. Rydberg obtained a formula to describe the wavelength of the hydrogen atom in:

Lyman series contains the wavelength given by the forumula:

Total energy of an electron in an orbit around the nucleus is the sum of:

The value of Rydberg's Constant RH is:

CAT-scans can be used to detect tumors in:

X-Ray diffraction reveals that they are:

X-Rays exhibit the phenomenon of:

The wave length of shortest wave length inLyman series is equal to:

The energy required to completely remove an electron from the atom is called:

The wavelength of Lyman series for hydrogen spectrum lies in the:

Total energy of an electron in an orbit around the nucleus is:

Brackett and Pfund series of spectral lines lies in the:

According to Bohr Atomic Model, the angular momentum of electron in an orbit equal to an integral multiple of:

The separation of ordinary whtie light into its components by the use of prism or grating is called:

The total energy of the electron in nth orbit of hydrogen atom around the nucleus is given by:

The radius of nth orbit of hydrogen atom can be given by:

X-Rays are electromagnetic wave having wavelength in the range of:

When an electron jumps from higher energy orbit to lower energy orbit, the difference of encergy appears in the form of:

The radiation emitted from hydrogen filled discharge tube shows:

The emissions of photons by a metal when electrons are incident is called:

The penetrating power of X-Rays depends on their:

The type of spectra produced by atom is:

When electron in hydrogen atom jumps from higher orbit into first orbit, the set of lines emitted is called

The velocity of moving electron in nth orbit is given by the relations:

Balmer empirical formula explain the electromagnetic radiations of any excited atom is in terms of their:

X-Rays were discovered in 1895 by:

The scientist who studied the wavelength of all lines of the hydrogen spectrum in visible region was:

Bohr's atomic model of hydrogen atom was proposed by Bohr in:

In X-Rays producing arrangement, target is made of:

If an electron jumps from lower to higher orbit it will:

The P.E. of an electron revolving at a distance rn from the nucleus is:

If the nummber of electrons hitting the target in the x-tube increases, then the intensity of the X-Rays:

X-Rays are affected by:

When electron abosrbs some energy, it jumps to:

The radius of 1st Bohr's orbit for hydrogen atom is:

The total energy of the electron in the nth orbit of hydrogen atom can also be written as:

The branch of physics which deals with the investigation of wavelength and intensities of elctromagnetic radiation emitted or absorbed by atoms is called:

Which of the following radiation will burn human skin?

The numerical value of ground state energy for hydrogen atom is:

The total energy of an electron revolving in the second orbit is:

The potential required to lift an electron from ground state to excited state is called:

The radius of the third Bohr orbit in hydrogen atom is greater than the radius of the first orbit by a factor of:

Which of the phenomenon can be studied with X-Rays

One Widely used system is computerized axial tomography is called:

When electron in hydrogen atom jumps from higher orbit into second orbit, the set of lines emitted is called

X-Rays eject electrons from matter by:

The velocity of X-Rays is equal to that of:

X-Rays are similar in nature to:

The spectrum of visible sun light ranges from:

X-Rays can cause:

X-Rays can:

The first spectral series in the spectrum of hydrogen atom was identified by Balmer in:

After the emission of X-Rays, the atom of the target is:

The transition of electrons between the various shells give rise to:

The rest mass of X-Rays Photon is:

The total energy of an electron remains constant:

The energy of X-Rays depends upon:

The potential required to lift an electron from ground state to higher energy state is called:

X-Rays cannot produce pair production because:

According to 3rd postulate of Bohr's theory

The diameter of the atom is the order of:

With increasing orbit number(n) the energy difference between adjacent levels in atoms:

The SI unit of Rydberg constant is: