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

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Question # 1

The natural arrangement of colours in the spectrum of white light spectrum is

Question # 2

Laser is a beam of:

Question # 3

Tick the series which lies in the visible region:

Question # 4

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

Question # 5

In helium Neon Laser Neon = 15% and Helium = 85% used. The lasing gas this unit is

Question # 6

Selenium is:

Question # 7

An electron of the hydrogen atom in the second orbit is called its:

Question # 8

Graph of Black body radiation is example of

Question # 9

The lasing or active medium in He-Ne laser discharge tube is:

Question # 10

CT scanning is the abbreviated name of

Question # 11

The first shell near the neucles is

Question # 12

Lyman series in the spectrum of hydrogen exists in the :

Question # 13

The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:

Question # 14

Coulomb multiplied by volt by volt gives the unit called:

Question # 15

The electric field lines start from:

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 Consider a photon of continuous X-ray and a photon of characteristics X-ray of same wavelength. Which of the following is/are different for the two photons
A. Frequency
B. Penetrating power
C. Energy
D. Method of creation
2 Graph of Black body radiation is example of
A. Band spectra
B. Continuo's spectra
C. Line spectra
D. All
3 The inkjet printer eject a thin stream of:
A. Water
B. Oil
C. Ink
D. Any above
4 CT scanning is the abbreviated name of
A. Computed Technology
B. Computed Technique
C. Computed Technology
D. Computerized Technique
5 Balmer series was identified in:
A. 1685
B. 1785
C. 1885
D. 1985
6 The shell closer to the nucleus is called:
A. N shell
B.
L shell
C. K shell
D. M shell
7 Static electricity is produced by the transfer of:
A. Electrons
B. Protons
C. One fluid
D. Two fluid
8 Tick the series which lies in the visible region:
A. Lyman series
B. Balmer series
C. Paschen series
D. Brackett series
9 Energy required by an electron revolving in certain orbit to jump to an excited state is called:
A. Ionization energy
B. Ionization potential
C. Excitation energy
D. Excitation potential
10 By CAT scans, we can detect the density difference of the order of:
A. 1%
B. 20%
C. 30%
D. 50%

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