Answer:
the correct answer is option C
Answer:
b. 0.25cm
Explanation:
You can solve this question by using the formula for the position of the fringes:

m: order of the fringes
lambda: wavelength 500nm
D: distance to the screen 5 m
d: separation of the slits 1mm=1*10^{-3}m
With the formula you can calculate the separation of two adjacent slits:

hence, the aswer is 0.25cm
Answer:
Impulse is 
The average force is 
Explanation:
When a mass
undergoes a change in velocity
, its impulse
is

and if a force
is acting for time
, then the impulse
is given by

Now the mass of the spores in kg is

we calculate the impulse from the first formula:


Now that we have impulse, we calculate the average force on the spore from the second formula:

