Question # 1

The value of Rydberg constant is

Choose an answer

1.0974 x 10⁷ m^-1

1.0974 x 10^-7 m^-1

1.0974 x 10⁶ m^-1

1.0974 x 10^-6 m^-1

Laser is a device which can produce:

Choose an answer

Intense beam of light

Coherant beam of light

Monochromatic beam of light

All of the above

Helium-Neon laser discharge tube contains neon

Choose an answer

82%

15%

25%

85%

In Helium Neon laser, the discharge tube is filled with

Choose an answer

80% He, 20% Neon

85% He, 15% Neon

83% He, 17% Neon

90% He, 10% Neon

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

Choose an answer

10.2 eV

0 eV

3.4 eV

6.8 eV

Kx -Xrays are produced due to transition of electron from.

Choose an answer

K to L shell

L to K shell

M to K shell

M to L shell

Laser can be made by creating.

Choose an answer

Meta stable

Population inversion

Excited state

All of these

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

Choose an answer

Holography

Geo graphy

Tomography

Radio graphy

Balmer series lies in region of electromagnetic spectrum.

Choose an answer

Infrared

Visible

Ultraviolet

Fra infrared

Radius of first orbit of an atom is r1= 0.053 nm, Radius of second orbit r2 will be.

Choose an answer

0.106 nm

0.212 nm

0.053 nm

0.53 x 10^-10 nm

Helium Neon Laser Beam emitted from discharge tube has a colour.

Choose an answer

Blue

Green

Red

Black

In an electronic transition atom cannot emit.

Choose an answer

Infrared radiations

Visible radiations

Ultraviolet radiations

Gama radiations

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

Choose an answer

Neil Bohr

Einstein

Compton

Rutherford

Hydrogen atom spectrum does not lie in

Choose an answer

Ultraviolet region

Visible region

Infrared region

X ray region

More Classes

Other Links

Ics Part 2 Physics Chapter 9 Test Online MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer