Dual Nature of Radiation and Matter Test

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Dual Nature of Radiation and Matter Test - 58

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Weekly Quiz Competition

Question 1
4 / -1

According to Mosley\'s law, the frequency of a spectral line in X-ray spectrum varies as

A
Atomic number of the element

B
Square of the atomic number of the element

C
Square root of the atomic number of the element

D
Fourth power of the atomic number of the element
Question 2
4 / -1

What determines the hardness of the X-rays obtained from the Coolidge tube?

A
Current in the filament

B
Pressure of air in the tube

C
Nature of target

D
Potential difference between cathode and target
Question 3
4 / -1

The most penetrating radiation out of the following is

A
X-rays

B
β-rays

C
α-particles

D
γ-rays
Question 4
4 / -1

X-rays cannot be deflected by means of an ordinary grating due to

A
Large wavelength

B
High speed

C
Short wavelength

D
None of these
Question 5
4 / -1

The energy of an X-ray photon of wavelength of 1.65 Å is
(h = 6.6 × 10^–34 J-sec, c = 3 × 10⁸ms^–1. 1eV = 1.6 × 10^–19J)

A
3.5 keV

B
5.5 keV

C
7.5 keV

D
9.5 keV

Solution
Question 6
4 / -1

If λ = 10 Å, then it corresponds to

A
Infrared

B
Microwave

C
Ultraviolet

D
X-rays
Question 7
4 / -1

Bragg\'s law for X-rays is

A
d sin θ = 2 nλ

B
2d sin θ = nλ

C
n sin θ = 2λd

D
None of these
Question 8
4 / -1

In an X-ray tube electrons bombarding the target produce X-rays of minimum wavelength 1 Å. What must be the energy of bombarding electrons?

A
13375 eV

B
12375 eV

C
14375 eV

D
15375 eV

Solution
Question 9
4 / -1

If energy of K-shell electron is –40000 eV and if 60000 V potential is applied at coolidge tube then which of the following X-rays will form?

A
Continuous

B
White X-rays

C
Continuous and all series of characteristic

D
None of the above
Question 10
4 / -1

For production of characteristic K_β X-rays, the electron transition is

A
n = 2 to n = 1

B
n = 3 to n = 2

C
n = 3 to n = 1

D
n = 4 to n = 2

Solution

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Re-Attempt Weekly Quiz Competition

Dual Nature of Radiation and Matter Test - 58

Result

Dual Nature of Radiation and Matter Test - 58

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SHARING IS CARING

Question 1

Atomic number of the element

Square of the atomic number of the element

Square root of the atomic number of the element

Fourth power of the atomic number of the element

Question 2

Current in the filament

Pressure of air in the tube

Nature of target

Potential difference between cathode and target

Question 3

X-rays

β-rays

α-particles

γ-rays

Question 4

Large wavelength

High speed

Short wavelength

None of these

Question 5

3.5 keV

5.5 keV

7.5 keV

9.5 keV

Solution

Question 6

Infrared

Microwave

Ultraviolet

X-rays

Question 7

d sin θ = 2 nλ

2d sin θ = nλ

n sin θ = 2λd

None of these

Question 8

13375 eV

12375 eV

14375 eV

15375 eV

Solution

Question 9

Continuous

White X-rays

Continuous and all series of characteristic

None of the above

Question 10

n = 2 to n = 1

n = 3 to n = 2

n = 3 to n = 1

n = 4 to n = 2

Solution

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