Answer:
The value of the angle is
.
Explanation:
Given:
The condition for diffraction minima is

where,
is the slit-width,
is the angle of incidence,
is the order number and
is the wavelength of the light.
The wavelength of an electron traveling through a medium is governed by de Broglie's hypothesis.
According to de Broglie's hypothesis

Here,
is Planck's constant,
is the mass of the electron and
is the velocity of the electron.
For first minimum
.
From equation (1), we have
![&& a \sin \theta = \dfrac{h}{m_{e}v}\\&or,& \theta = \sin^{-1}[\dfrac{h}{am_{e}v}]](https://tex.z-dn.net/?f=%26%26%20a%20%5Csin%20%5Ctheta%20%3D%20%5Cdfrac%7Bh%7D%7Bm_%7Be%7Dv%7D%5C%5C%26or%2C%26%20%5Ctheta%20%3D%20%5Csin%5E%7B-1%7D%5B%5Cdfrac%7Bh%7D%7Bam_%7Be%7Dv%7D%5D)
Answer:
c - the frequency of the waves decreases
Answer:
Explanation:
Be M1 and M2 the two massive objects and m the third one
The gravitational force over the third object at the beginning is zero (assuming that the position of the third object is x=0)

when the third object is displaced we have that the new position is x=Δx. Hence

I attached a scheme of the system
I hope this is useful for you
Regards
Answer:
I think it is False.
Explanation:
I think that a body could not be vertical for every time.