Dual Nature of Radiation and Matter Test

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Dual Nature of Radiation and Matter Test - 56

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Weekly Quiz Competition

Question 1
4 / -1

X-rays of which of the following wavelengths are hardest?

A
4 Å

B
1 Å

C
0.1 Å

D
2 Å

Solution
Question 2
4 / -1

X-rays region lies between

A
Short radiowave and visible region

B
Visible and ultraviolet region

C
Gamma rays and ultraviolet region

D
Short radiowave and long radiowave
Question 3
4 / -1

The structure of solid crystals in investigated by using

A
Cosmic rays

B
X-rays

C
Infrared radiations

D
γ-rays
Question 4
4 / -1

In an X-rays tube, the intensity of the emitted X-rays beam is increased by

A
Increasing the filament current

B
Decreasing the filament current

C
Increasing the target potential

D
Decreasing the target potential
Question 5
4 / -1

The binding energy of the innermost electron in tungsten is 40 keV. To produce characteristic X-rays using a tungsten target in an X-rays tube the potential difference V between the cathode and the anti-cathode should be

A
V < 40 kV

B
V ≤ 40 kV

C
V > 40 kV

D
V > /< 40 kV
Question 6
4 / -1

In above question the energy of the characteristic X-rays given out is

A
Less than 40 keV

B
More than 40 keV

C
Equal to 40 keV

D
≥ 40 keV
Question 7
4 / -1

The wavelength of most energetic X-rays emitted when a metal target is bombarded by 40 keV electrons, is approximately
(h = 6.62 × 10^–34 J-sec; 1 eV = 1.6 × 10^–19 J; c = 3 × 10⁸ m/s)

A
300 Å

B
10 Å

C
4 Å

D
0.31 Å

Solution
Question 8
4 / -1

Compton effect shows that

A
X-rays are waves

B
X-rays have high energy

C
X-rays can penetrate matter

D
Photons have momentum
Question 9
4 / -1

X-rays of λ =1 Å have frequency

A
3 × 10⁸ Hz

B
3 × 10¹⁸ Hz

C
3 × 10¹⁰ Hz

D
3 × 10¹⁵ Hz

Solution
Question 10
4 / -1

Mosley measured the frequency (f) of the characteristic X-rays from many metals of different atomic number (Z) and represented his results by a relation known as Mosley\'s law. This law is (a, b are constants)

A
f = a(Z – b)²

B
Z = a (f – b) ²

C
f² = a (Z – b)

D
f = a (Z – b) ^1/2

Solution

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Dual Nature of Radiation and Matter Test - 56

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Dual Nature of Radiation and Matter Test - 56

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Question 1

4 Å

1 Å

0.1 Å

2 Å

Solution

Question 2

Short radiowave and visible region

Visible and ultraviolet region

Gamma rays and ultraviolet region

Short radiowave and long radiowave

Question 3

Cosmic rays

X-rays

Infrared radiations

γ-rays

Question 4

Increasing the filament current

Decreasing the filament current

Increasing the target potential

Decreasing the target potential

Question 5

V < 40 kV

V ≤ 40 kV

V > 40 kV

V > /< 40 kV

Question 6

Less than 40 keV

More than 40 keV

Equal to 40 keV

≥ 40 keV

Question 7

300 Å

10 Å

4 Å

0.31 Å

Solution

Question 8

X-rays are waves

X-rays have high energy

X-rays can penetrate matter

Photons have momentum

Question 9

3 × 108 Hz

3 × 1018 Hz

3 × 1010 Hz

3 × 1015 Hz

Solution

Question 10

f = a(Z – b)2

Z = a (f – b) 2

f2 = a (Z – b)

f = a (Z – b) 1/2

Solution

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3 × 10⁸ Hz

3 × 10¹⁸ Hz

3 × 10¹⁰ Hz

3 × 10¹⁵ Hz

f = a(Z – b)²

Z = a (f – b) ²

f² = a (Z – b)

f = a (Z – b) ^1/2