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 photocopying process is called:

Question # 2

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

Question # 3

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

Question # 4

Static electricity is produced by the transfer of:

Question # 5

In case of braking radiations, when the rate of deceleration is very large, the emitted radiation corresponds to:

Question # 6

The life time of metastable state is equal to

Question # 7

The holes created in the L and M shells are occupied by transitions of:

Question # 8

The process of formation of spectrum is called:

Question # 9

CT scanning is the abbreviated name of

Question # 10

Braking radiation causes:

Question # 11

The inkjet printer eject a thin stream of:

Question # 12

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

Question # 13

The first shell near the neucles is

Question # 14

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

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 electric field lines start from:
A. Positive charge
B. Negative charge
C. Either A and B
D. Neutron
2 The inkjet printer eject a thin stream of:
A. Water
B. Oil
C. Ink
D. Any above
3 Balmer series lies in that region of electromagnetic wave spectrum which is called:
A. Visible region
B. Invisible region
C. Infra-red region
D. ultraviolet region
4 The photocopying process is called:
A. Geography
B. Sonography
C. Xerography
D. Zerography
5 The first shell near the neucles is
A. L-shell
B. X-shell
C. N-shell
D. M-shell
6 The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:
A. Ultra red region
B. Visible region
C. Ultraviolet region
D. Any of these
7 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
8 The results of spectra obtained by Blamer were expressed in 1896 by
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
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 Balmer series was identified in:
A. 1685
B. 1785
C. 1885
D. 1985

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