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

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Question # 1

The spectrum emitted from hydrogen filled discharge tube is:

Question # 2

The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is

Question # 3

The process of formation of spectrum is called:

Question # 4

We can excite an atom by

Question # 5

Ultraviolet region lies in ______ series

Question # 6

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

Question # 7

A metastable stae:

Question # 8

The first shell near the neucles is

Question # 9

Lyman series in the spectrum of hydrogen exists in the :

Question # 10

Static electricity is produced by the transfer of:

Question # 11

CT scanning is the abbreviated name of

Question # 12

The shell closer to the nucleus is called:

Question # 13

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

Question # 14

The results of spectra obtained by Blamer were expressed in 1896 by

Question # 15

Laser is a beam of:

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ECAT Physics Chapter 20 Important MCQ's

Sr.# Question Answer
1 By CAT scans, we can detect the density difference of the order of:
A. 1%
B. 20%
C. 30%
D. 50%
2 The range of wavelengths of colurs in the visible colours is
A. 140 nm to 456 nm
B. 10 nm to 56 nm
C. 410 nm to 656 nm
D. 910 nm to 956 nm
3 The first shell near the neucles is
A. L-shell
B. X-shell
C. N-shell
D. M-shell
4 We can excite an atom by
A. Bombardment of particles
B. Radiating photons
C. Providing potential difference
D. All answer are true
5 X-rays can penetrate in a solid matte through a distance of several:
A. Kilo metres
B. Metres
C. Centimeters
D. A few angstroms
6 The spectrum emitted from hydrogen filled discharge tube is:
A. Line spectrum
B. Discrete spectrum
C. And spectrum
D. Absorption spectrum
7 Braking radiation causes:
A. Continuous spectrum
B. Line Spectrum
C. Band spectrum
D. Discrete specturm
8 Ultraviolet region lies in ______ series
A. Layman
B. Balmer
C. P fund
D. B racket
9 The inkjet printer eject a thin stream of:
A. Water
B. Oil
C. Ink
D. Any above
10 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

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