ECAT Pre Engineering Physics Chapter 20 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 20 Atomic Spectra

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 20 Atomic Spectra

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Physics ECAT Pre Engineering Chapter 20 Atomic Spectra

00:00
Question # 1

CT scanning is the abbreviated name of

Question # 2

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

Question # 3

Static electricity is produced by the transfer of:

Question # 4

The value of the metastable state for Neon is

Question # 5

Graph of Black body radiation is example of

Question # 6

Selenium is:

Question # 7

The electric field lines start from:

Question # 8

The process of formation of spectrum is called:

Question # 9

Gaussian surface is always:

Question # 10

The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:

Question # 11

Tick the series which lie/s in. the infra-red region.

Question # 12

Laser is a beam of:

Question # 13

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

Question # 14

Tick the series which lies in the visible region:

Question # 15

The first series which was identified in the spectrum of hydrogen is called:

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 The value of the metastable state for Neon is
A. 20.66eV
B. 20.61eV
C. 19.23eV
D. 18.70eV
2 The lasing or active medium in He-Ne laser discharge tube is:
A. Nitrogen
B. Helium
C. Hydrogen
D. Neon
3 Tick the series which lies in the visible region:
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
4 An compared to solid matter, a crack or an air bubble allows:
A. Great amount of X-rays to pass
B. Smallast amount of X-rays to pass
C. Very samall amount of X-rays to pass
D. Any of these
5 Coulomb multiplied by volt by volt gives the unit called:
A. farad
B. Ohm
C. Second
D. joule
6 Selenium is:
A. An insulator
B. A conductor
C. Both A and B
D. Excellent conductor
7 Static electricity is produced by the transfer of:
A. Electrons
B. Protons
C. One fluid
D. Two fluid
8 Braking radiation causes:
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
9 The first series which was identified in the spectrum of hydrogen is called:
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
10 The electric field lines start from:
A. Positive charge
B. Negative charge
C. Either A and B
D. Neutron

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  • Salmankhan

    Salmankhan

    01 Feb 2018

    Some mcqs having wrong answers.

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