Second Year Physics Chapter 20 Online MCQ Test for 2nd Year Physics Chapter 20 Atomic Spectra Preparation

FSC Part 2 Physics
Chapter 20 Test

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Physics FSC Part 2 Chapter 20 Online MCQ's Test

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Question # 1

When meta I is heated sufficiently electrons are given off by the metal. This phenomenon is known as.

Question # 2

 Charge on an atom is:

Question # 3

Radius of first Bohr's orbit is.

Question # 4

The line radiations emitted from by hydrogen filled discharge tube can be analyzed into.

Question # 5

In Helium Neon laser, discharge tube is filled with Neon gas.

Question # 6

In the Bohr's model of the hydrogen atom, the lowest orbit corresponds to:

Question # 7

In according with Bohr's theory the K.E of the electron is equal to:

Question # 8

The value of Rydberg constant is:

Question # 9

For Paschen series, the value of 'n' starts from

Question # 10

Photons emitted in inner shell transition are.

Question # 11

Which of the following series of hydrogen spectrum lies in ultra violet region.

Question # 12

The following gas was identified in the sun using spectroscopy

Question # 13

Life time of metastable states is

Question # 14

Which series lies in the ultraviolet region.

Question # 15

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

Question # 16

1 rad =

Question # 17

Production of x rays is reverse process of

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