In an electron microscope, electron are accelerat

Question

In an electron microscope, electron are accelerated to great velocities. Calculate the wavelength of an electron travelling with a velocity of 7.0 megameters per second . The mass of an electron is 9.1×10 -28 g -(A) 1.0 × 10^-13 m (B) 1.0 × 10^-7 m (C) 1.0 m(D) 1.0 × 10^-10m

Arun · Accepted Answer

Notice: The mass of electron provided by you is wrong.It should be 9.1 x 10−28 g.Velocity = 7.0 Mega metre per second = 7.0 x 106.m s−1​​​​​wavelength = h / m x v ​​​​​​h = planck's constant6.626 x 10−34J s = 6.626 x 10−34.kg m2s−1 Wavelength (lambda) = 6.626 x 10−34 kgm2s−1 / ( 9.1 x 10−31kg x 7.0 x 106ms−1 ) =1.0 x 10−10 m

IIT JEE Entrance Exam> In an electron microscope, electron are a...

In an electron microscope, electron are accelerated to great velocities. Calculate the wavelength of an electron travelling with a velocity of 7.0 megameters per second . The mass of an electron is 9.1×10 -28 g -
(A) 1.0 × 10^-13 m (B) 1.0 × 10^-7 m (C) 1.0 m
(D) 1.0 × 10^-10m

Subham Panda , 9 Years ago

Arun

LIVE ONLINE CLASSES

Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-

iit jee entrance exam

My rank is 29k, General, should I opt for any state college cse branch or some Nits in which in which I am getting ECE , chemical, mechanics etc....

iit jee entrance exam

How is Ranquer Eduzone,comparing, Akash,Fitjee,Resonance,Naryana

iit jee entrance exam

Can class 9th students study syllabus class of 11th

iit jee entrance exam

Sum of series 2[n/2] ! [n/2]!/ n! [2Co-2C2+3C2....+[-1]^n[n+1]2Cn] where n is an even positive integer. Kindly provide solution of this question and how to generalise this. How do we know that which expansion will give this?

iit jee entrance exam

IIT JEE Entrance Exam> In an electron microscope, electron are a...

In an electron microscope, electron are accelerated to great velocities. Calculate the wavelength of an electron travelling with a velocity of 7.0 megameters per second . The mass of an electron is 9.1×10 -28 g -(A) 1.0 × 10^-13 m (B) 1.0 × 10^-7 m (C) 1.0 m(D) 1.0 × 10^-10m

Subham Panda , 9 Years ago

Arun

LIVE ONLINE CLASSES

Other Related Questions on iit jee entrance exam

Let S={x:x belongs to R(√3+√2)^(x^2-4) - (√3-√2)^(x^2-4)=10}. Then n(S) is equal to-

iit jee entrance exam

My rank is 29k, General, should I opt for any state college cse branch or some Nits in which in which I am getting ECE , chemical, mechanics etc....

iit jee entrance exam

How is Ranquer Eduzone,comparing, Akash,Fitjee,Resonance,Naryana

iit jee entrance exam

Can class 9th students study syllabus class of 11th

iit jee entrance exam

Sum of series 2[n/2] ! [n/2]!/ n! [2Co-2C2+3C2....+[-1]^n[n+1]2Cn] where n is an even positive integer. Kindly provide solution of this question and how to generalise this. How do we know that which expansion will give this?

iit jee entrance exam

In an electron microscope, electron are accelerated to great velocities. Calculate the wavelength of an electron travelling with a velocity of 7.0 megameters per second . The mass of an electron is 9.1×10 -28 g -
(A) 1.0 × 10^-13 m (B) 1.0 × 10^-7 m (C) 1.0 m
(D) 1.0 × 10^-10m