Physics ECAT Pre Engineering Chapter 20 Atomic Spectra Physics Online Test

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  • Available questions51
  • Chapter NameCh 20 - Atomic Spectrs
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Physics ECAT Pre Engineering Chapter 20 Atomic Spectra Physics Online Test

  • Total Questions15

  • Time Allowed20

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Physics ECAT Pre Engineering Chapter 20 Atomic Spectra Physics Online Test

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Question # 1

The process of formation of spectrum is called:

Question # 2

An compared to solid matter, a crack or an air bubble allows:

Question # 3

X-rays can penetrate in a solid matte through a distance of several:

Question # 4

Selenium is:

Question # 5

Photons must have energy equal to

Question # 6

The shell closer to the nucleus is called:

Question # 7

Tick the series which lies in the visible region:

Question # 8

The results of spectra obtained by Balmer were expressed in 1896 by:

Question # 9

The holes created in the L and M shells are occupied by transitions of:

Question # 10

In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:

Question # 11

Gaussian surface is always:

Question # 12

Coulomb multiplied by volt by volt gives the unit called:

Question # 13

Balmer series was identified in:

Question # 14

The spectrum emitted from hydrogen filled discharge tube is:

Question # 15

If the distance between two charges is doubled,the force between them will become:

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