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

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

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

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

Lyman series contains the wavelength given by the forumula:

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

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

Which of the following is an example of continuous spectra?

The reverse process of photoelectric effect is called

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

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

X-Rays eject electrons from matter by:

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

According to 3rd postulate of Bohr's theory

The rest mass of X-Rays Photon is:

X-Ray diffraction reveals that they are:

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

The continuous X-Rays spectrum is obtained due to:

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

Which of the following shell is closest to nucleus

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

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

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

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

Balmer series contains the wavelength given by the formula:

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

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

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

X-Rays cannot produce pair production because:

The SI unit of Rydberg constant is:

Brackett and Pfund series of spectral lines lies in the:

X-Rays can cause:

Which of the following is an example of line spectra?

CAT-scans can be used to detect tumors in:

Which of the following is an example of band spectra?

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

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

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

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

The radiation emitted from hydrogen filled discharge tube shows:

Ionization energy of Hydrogen atom m first exited stated is:

X-Rays are:

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

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

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

CAT stands for:

Which of the following radiation will burn human skin?

The type of spectra produced by atom is:

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

X-Rays are similar in nature to:

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

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

When electron abosrbs some energy, it jumps to:

The spectrum of visible sun light ranges from:

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

The energy of X-Rays depends upon:

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

One Widely used system is computerized axial tomography is called:

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

X-Rays exhibit the phenomenon of:

The value of Rydberg's Constant RH is:

X-Rays can:

Pfund series contains the wavelength given by the forumula:

An is equal to:

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

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

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

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

The magnitude of ionization of hydrogen is:

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

Balmer series contains the wavelength in the:

The penetrating power of X-Rays depends on their:

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

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

Which of the phenomenon can be studied with X-Rays

X-Rays are affected by:

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

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

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

The diameter of the atom is the order of:

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

The total energy of an electron remains constant:

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

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

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

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

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

Radiation with wavelength greater than red light is called:

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

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

X-Rays were discovered in 1895 by:

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

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

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

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

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