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 inkjet printer eject a thin stream of:

Question # 2

By CAT scans, we can detect the density difference of the order of:

Question # 3

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

Question # 4

The first shell near the neucles is

Question # 5

The electric field lines start from:

Question # 6

Photons must have energy equal to

Question # 7

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

Question # 8

Energy required by an electron revolving in certain orbit to jump to an excited state is called:

Question # 9

Tick the series which lies in the visible region:

Question # 10

X-rays produced in a tube operating at 105V. The speed of X-rays produced is

Question # 11

The process of formation of spectrum is called:

Question # 12

Static electricity is produced by the transfer of:

Question # 13

The shell closer to the nucleus is called:

Question # 14

Graph of Black body radiation is example of

Question # 15

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

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 The electric field lines start from:
A. Positive charge
B. Negative charge
C. Either A and B
D. Neutron
2 The value of the metastable state for Neon is
A. 20.66eV
B. 20.61eV
C. 19.23eV
D. 18.70eV
3 Braking radiation causes:
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
4 The photocopying process is called:
A. Geography
B. Sonography
C. Xerography
D. Zerography
5 CT scanning is the abbreviated name of
A. Computed Technology
B. Computed Technique
C. Computed Technology
D. Computerized Technique
6 Static electricity is produced by the transfer of:
A. Electrons
B. Protons
C. One fluid
D. Two fluid
7 An electron of the hydrogen atom in the second orbit is called its:
A. Ground state
B. Excited state
C. Ionized state
D. Any of these
8 Tick the series which lie/s in. the infra-red region.
A. Pfund series
B. Brackett series
C. Paschen series
D. All of these
9 Spectrum represents the number of component colours present in certain light in terms of:
A. Wavelength
B. Frequency
C. Energy
D. Both (A) and (B)
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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