ECAT Pre Computer Science Chapter 20 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 20 Atomic Spectra

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

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ECAT Physics Chapter 20 Atomic Spectra

00:00
Question # 1

Gaussian surface is always:

Question # 2

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

Question # 3

We can excite an atom by

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

Ultraviolet region lies in ______ series

Question # 8

Spectrum represents the number of component colours present in certain light in terms of:

Question # 9

Photons must have energy equal to

Question # 10

Static electricity is produced by the transfer of:

Question # 11

In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them

Question # 12

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

Question # 13

Lyman series in the spectrum of hydrogen exists in the :

Question # 14

CT scanning is the abbreviated name of

Question # 15

Coulomb multiplied by volt by volt gives the unit called:

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is
A. 1.24 x 10-10m
B. 7.92 x 10-20m
C. 2.78 x 10-14m
D. 3.88 x 10-11m
2 X-rays can penetrate in a solid matte through a distance of several:
A. Kilo metres
B. Metres
C. Centimeters
D. A few angstroms
3 X-ray are also known as
A. Roentgen rays
B. Maxwell rays
C. Plank range
D. Einstein rays
4 In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them
A. Small
B. Greater
C. Equal
D. Sometimes
5 Static electricity is produced by the transfer of:
A. Electrons
B. Protons
C. One fluid
D. Two fluid
6 The natural arrangement of colours in the spectrum of white light spectrum is
A. VIBGYOR
B. ROYBGIV
C. ROYBIGV
D. BIGROYV
7 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
8 A metastable stae:
A. Is an excited state
B. Is that in which excited electron is stable
C. Is that in which excited electron is usually unstable
D. Means a time interval of 10-8second
9 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
10 The shell closer to the nucleus is called:
A. N shell
B.
L shell
C. K shell
D. M shell

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