4131

Physics Modern Physics Level: Misc Level

what is the wavelength of a photon that has the same frequency as an electron( mass is 9.11x 10 to the -31 kg) traveling at 2 x10 to the 6th m/sec?

4127

Physics Modern Physics Level: Misc Level

A particle is accelerated through 200 V. Find its speed and de Broglie wavelength if is a) an electron b)a proton

3533

Physics Modern Physics Level: University

Dual Nature Davission and germer experiment
 X-rays of wavelength10.0 pm are incident on a target. Find the wavelength of the x-rays scattered at (a) 45.0degree (b) 90.0 degree.

2962

Physics Modern Physics Level: High School

Dual Nature

Which one of the following quantities is the same for all photons in vacuum ?

a) Speed

b) Frequency

c) Kinetic energy

d) Wavelength

e) Total energy

2468

Physics Modern Physics Level: High School

Dual Nature

What is each of the following ?

a) the wavelength of a 5.0 eV photon .

b) the de Broglie wavelength of a 5.0 eV electron .

2458

Physics Modern Physics Level: High School

Dual Nature

In a television picture tube the electron are accelerated from rest through a potential difference V . Just before an electron strikes the screen , its de Broglie wavelength is 1.0 x 10^-11 m . What is the potential difference ?

2451

Physics Modern Physics Level: High School

Dual Nature

An electron and a photon each have a wavelength of 0.1 nm . Compare their kinetic energies .

2450

Physics Modern Physics Level: High School

Dual Nature

An athlete weighing 70 kg travel at a speed of 10 m/s . What is her de Broglie wavelength ?

2448

Physics Modern Physics Level: High School

Dual Nature

An electron is accelerated through a potential difference of 1000V what is .

a) Its K.E in electron volts ?

b) Its K.E in Joules ?

c) Its speed ?