Answer:
0.0003 m = 0.3 mm
Explanation:
For constructive interference in the Young's experiment.
The position of the mth fringe from the central fringe is given by
y = L(mλ/d)
λ = wavelength = 720 nm = 720 × 10⁻⁹ m
L = distance between slits and screen respectively = 1.0 m
d = separation of slits = 0.68 mm = 0.68 × 10⁻³ m
m = 2
y = 1(2 × 720 × 10⁻⁹/(0.68 × 10⁻³) = 0.00212 m = 2.12 mm
For the 620 nm light,
y = 1(2 × 620 × 10⁻⁹/(0.68 × 10⁻³) = 0.00182 m = 1.82 mm
Distance apart = 2.12 - 1.82 = 0.3 mm = 0.0003 m
It depends on the type of cat....
Answer:
B. It changes the objects direction
Answer:
The potential difference through which an electron accelerates to produce x rays is
.
Explanation:
It is given that,
Wavelength of the x -rays, 
The energy of the x- rays is given by :

The energy of an electron in terms of potential difference is given by :

So,

V is the potential difference
e is the charge on electron


V = 12431.25 volts
or

So, the potential difference through which an electron accelerates to produce x rays is
. hence, this is the required solution.
k=1/2mv^2
k=1/2 x 50.0 x 18^2 = 8100 joules