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 , 7 Years ago

Arun

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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 , 7 Years ago

Arun

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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?

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