Dual Nature of Radiation and Matter Test

Result

Dual Nature of Radiation and Matter Test - 77

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Weekly Quiz Competition

Question 1
4 / -1

For the Bohr\'s first orbit of circumference 2πr, the de-Broglie wavelength of revolving electron will be

A

B

C

D

Solution
Question 2
4 / -1

What is the de-Broglie wavelength of the α–particle accelerated through a potential difference V?

A

B

C

D

Solution
Question 3
4 / -1

The energy that should be added to an electron, to reduce its de-Broglie wavelength from 10^–10m to0.5 × 10^–10 m, will be

A
Four times the initial energy

B
Thrice the initial energy

C
Equal to the initial energy

D
Twice the initial energy

Solution
Question 4
4 / -1

If particles are moving with same velocity, then maximum de-Broglie wavelength will be for

A
Neutron

B
Proton

C
β–particle

D
α–particle

Solution
Question 5
4 / -1

If an electron and a photon propagate in the form of waves having the same wavelength, it implies that they have the same

A
Energy

B
Momentum

C
Velocity

D
Angular momentum

Solution
Question 6
4 / -1

The de-Broglie wavelength is proportional to

A

B

C

D

Solution
Question 7
4 / -1

Particle nature and wave nature of electromagneticwaves and electrons can be shown by

A
Electron has small mass, deflected by the metal sheet

B
X-rays is diffracted, reflected by thick metal sheet

C
Light is refracted and defracted

D
Photoelectricity and defracted
Question 8
4 / -1

The de-Broglie wavelength of a particle moving with a velocity 2.25 × 10⁸ m/s is equal to the wavelength of photon. The ratio of kinetic energy of the particle to the energy of the photon is (velocity of light is 3 × 10⁸ m/s)

A
1/8

B
3/8

C
5/8

D
7/8

Solution
Question 9
4 / -1

According to de-Broglie, the de-Broglie wavelength for electron in an orbit of (radius 5.3 × 10¹¹ m) hydrogen atom is 10^–10 m. The principle quantum number of this electron is

A
1

B
2

C
3

D
4

Solution
Question 10
4 / -1

The speed of an electron having a wavelength of10^–10 m is

A
7.25 × 10⁶ m/s

B
6.26 × 10⁶ m/s

C
5.25 × 10⁶ m/s

D
4.24 × 10⁶ m/s

Solution