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 first shell near the neucles is

Question # 2

Static electricity is produced by the transfer of:

Question # 3

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

Question # 4

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

Question # 5

Selenium is:

Question # 6

The inkjet printer eject a thin stream of:

Question # 7

Braking radiation causes:

Question # 8

The life time of metastable state is equal to

Question # 9

We can excite an atom by

Question # 10

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

Question # 11

Balmer series lies in that region of electromagnetic wave spectrum which is called:

Question # 12

CT scanning is the abbreviated name of

Question # 13

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

Question # 14

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

Question # 15

The He-Ne laser discharge tube is filled with:

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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 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)
3 The first shell near the neucles is
A. L-shell
B. X-shell
C. N-shell
D. M-shell
4 X-ray are also known as
A. Roentgen rays
B. Maxwell rays
C. Plank range
D. Einstein rays
5 The formula of Brackett series can be obtained by putting in the general formula, the value of n equal to:
A.
one
B. two
C. three
D. four
6 X-rays can penetrate in a solid matte through a distance of several:
A. Kilo metres
B. Metres
C. Centimeters
D. A few angstroms
7 Coulomb multiplied by volt by volt gives the unit called:
A. farad
B. Ohm
C. Second
D. joule
8 We can excite an atom by
A. Bombardment of particles
B. Radiating photons
C. Providing potential difference
D. All answer are true
9 The results of spectra obtained by Blamer were expressed in 1896 by
A. Bohr
B. Rydberg
C. Planck
D. Rutherford
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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