wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

matter waves

Total questions: 9

Worksheet time: 5mins

Name
Class
Date
1.

De Broglie equation

a)

relates the momentum of a mass to its wavelength

b)

relates the energy of a mass to its wavelength

c)

relates the frequency of a mass to its wavelength

d)

relates the work function of a mass to its wavelength

2.

Particles whose motions are better described by quantum mechanics can only gain or lose energy in discrete units called

a)

Protons

b)

Quanta

c)

Electrons

3.

The de Broglie wave equation showed that the wavelength of any moving object is equal to

a)

m/hν

b)

h/mv

c)

v/mh

d)

hm/v

4.

Determined that electron paths cannot be predicted and exist inside the Electron Cloud.

a)

John Dalton

b)

Ernest Rutherford

c)

Schrodinger & Heisenberg

d)

Bohr

5.

Light acts like

a)

a wave.

b)

a particle.

c)

Both a wave and a particle

d)

neither a wave nor a particle.

6.

आवाज सुन कर उत्तर दें

a)

1937

b)

1900

c)

2019

7.

डेब्रोग्ली की परिकल्पना के अनुसार 54 volt से त्वरित इलेक्ट्रान की वेवलेंथ होगी

a)

1.67 angstrom

b)

1.67 nm

8.

सुनकर उत्तर दें

a)

50 डिग्री

b)

65 डिग्री

9.

Ni क्रिस्टल से इलेक्ट्रान के प्रकीर्णन ब्रेग विवर्तन सूत्र से तरंगदैर्ध्य का कितना मान प्राप्त होता है

a)

1.65

A0A^0

b)

1.65 cm