Is this the right formula to use?

  • Thread starter Thread starter linuxux
  • Start date Start date
  • Tags Tags
    Formula
AI Thread Summary
The discussion centers on determining the correct formula for calculating the angular width of the central maximum in a single-slit diffraction scenario. The equation proposed is Δθ = 2(λ/slit width), which is deemed appropriate for this calculation. Users emphasize the importance of understanding the derivation of the formula to build confidence in its application. The specific parameters include a wavelength of 600 nm and a slit width of 0.015 mm. Understanding the underlying principles of diffraction will enhance the accuracy of using this equation.
linuxux
Messages
133
Reaction score
0

Homework Statement


Not sure which equation to use?

600nm light falls on a single slit of width 0.015mm. What is the angular width of the central maximum?

Homework Equations



\Delta\theta = 2\left(\frac{\lambda}{slit width}\right)

is that the right equation to use?
 
Last edited:
Physics news on Phys.org
Looks good to me. But to gain confidence, you should understand how it is derived.
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
Back
Top