12th Class Physics MCQS Chapter 9

Study of hydrogen visible spectrum in

1895

1886

1887

1885

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

Brockett series

P fund series

Balmer series

All of above

Charge on positron is:

Negative 

Positive

None of these

Netural

Energy produced due to fission of uranium atom is:

500MeV

200MeV

700MeV

750MEV

The process by which lesser beam can be used to generate 3-dimensional images of objects is called

Holography

Tomography

Geo graphy

Radio graphy

A° is the unit of:

Energy

Length

Nuclear energy

Work

When an electron in an atom goes from a lower to higher orbit its:

K.E decreases , P.E decreases

K.E increases , P.E decreases

K.E increases , P.E increases

K.E decreases , P.E increases

If 13.6 eV energy is required to ionize the hydrogen atom, then the required energy to remove an electron from n=2 is:

6.8 eV

10.2 eV

3.4 eV

0 eV

The series in infrared region is:

Bracket series

Pfund series

All of above

Paschen series

The first theory about the structure of an atom was introduced by

Einstein

Compton

Neil Bohr

Rutherford