# How do you find de Broglie wavelength with kinetic energy?

How do you find de Broglie wavelength with kinetic energy? If you double the kinetic energy of a particle, how does the deBroglie wavelength change? Solution: λ = h/p, E = p2/(2m), p is proportional to √E, l is proportional to 1/√E. λ21 = √(E1/E2) = 1/√2.

What is the de Broglie wavelength of an electron with kinetic energy? Solution : Given, `KE = 120 eV, m = 9.1xx10^(-3)kg, e = 1.6xx10^(-19)c` <br> `lambda = (12.27)/(sqrt(V)) Å = (12.27)/(sqrt(120)) Å = 0.112xx10^(-9) m therefore lambda = 0.112 nm`.

How does kinetic energy relate to wavelength? Definition: The Maximum Kinetic Energy of a Photoelectron given Wavelength. The maximum kinetic energy of a photoelectron is given by ???? = ℎ ???? ???? − ???? , m a x where ℎ is the Planck constant, ???? is the speed of light, ???? is the wavelength of the incident photon, and ???? is the work function of the metal surface.

What is the de Broglie wavelength of an electron with a kinetic energy of 1.0 eV? For an electron with KE = 1 eV and rest mass energy 0.511 MeV, the associated DeBroglie wavelength is 1.23 nm, about a thousand times smaller than a 1 eV photon.

## How do you find de Broglie wavelength with kinetic energy? – Additional Questions

### What is the de Broglie wavelength of an electron with kinetic energy 50 EV?

Solution : `lambda=12.27/sqrt(v) =12.27/sqrt(50) =1.732 Å`.

### What is the de Broglie wavelength of an electron with kinetic energy 100ev?

=1.23 × 10−10 m = 1. 23Ao.

### What is the de Broglie wavelength of an electron that has 2.0 Kev of kinetic energy?

1 Answer. Truong-Son N. λ=0.388 nm .

m = 0.0868 nm.

### What will be the wavelength of an electron of energy 500 eV?

Solution : We are given : Energy of electron `= 500 eV= 500xx 1.6xx 10^(-19) J` <br> We know that, `lambda= (h)/(sqrt(2mE))= (6.62xx 10^(-34))/(sqrt(2xx 9.1xx 10^(-31)xx 500xx 1.6xx 10^(-19)))= 5.75xx 10^(-11)= 0.575 dot(A)`.

### When the applied voltage is 10000 V the de Broglie wavelength of an electron is?

When the applied voltage is 10,000 V, the de-Broglie wavelength of an electron is. = 0.123 Å.

### Is the kinetic energy of the particle is increased to 16 times its previous value the percentage change in the de Broglie wavelength of the particle is?

Solution : KE = 16 times `rArr` V = 4 times <br> `rArr` De-broglie wavelength `(lamda = (h)/(mV))` <br> = on fourth `(lamda_(0)rarr(lamda_(0))/(4))`. So De-Broglie wave will decrease by 75 %.

λ=1. 23×10−9m.

### What is the wavelength of a ball of mass 0.1 kg?

By using the above de Broglie equation, \$lambda = dfrac{h}{{mv}} = dfrac{{6.626 times {{10}^{ – 34}}Js}}{{(0.1Kg) times 10m{s^{ – 1}}}} = 6.626 times {10^{ – 34}}m\$ . Hence, \$6.626 times {10^{ – 34}}m\$ is the answer.

1.32×10−35m.

### What will be the wavelength of a ball of mass 100g?

λ=mvh=0. 1×1006. 626×10=6. 626×10−35m.

### What will be the wavelength of a ball of mass 0.2 kg?

Answer: According to DE BROGLIE wavelength is inversely proportional to the momentum of the particle. =2.652×10^-34 m (aprox.)

### What is de Broglie wavelength of a ball of mass 0.12 kg?

The de-Broglie wave length of a ball of mass 0.12 kg is `2.76xx10^-34m.

### What is the de Broglie’s wavelength of a 50 kg mass moving at 20 m s?

1 Answer. Nam D. Truong-Son N. I get 2.65⋅10−36 m .

λ=2. 385×10−30m.

### What will be the wavelength of a ball of mass 0.2 kg moving with a velocity of 10ms 1?

Wave length =6.62*10^-34m Ans. 