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

Question # 2

Braking radiation causes:

Question # 3

The first shell near the neucles is

Question # 4

Atoms of hydrogen gas can be excited by passing electric current through it when the gas is filled into the discharge tube at a pressure which is

Question # 5

The He-Ne laser discharge tube is filled with:

Question # 6

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

Question # 7

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

Question # 8

Gaussian surface is always:

Question # 9

The shell closer to the nucleus is called:

Question # 10

We can excite an atom by

Question # 11

CT scanning is the abbreviated name of

Question # 12

Laser is a beam of:

Question # 13

Lyman series in the spectrum of hydrogen exists in the :

Question # 14

Ultraviolet region lies in ______ series

Question # 15

The inkjet printer eject a thin stream of:

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