Chapter 33: Q. 27 (page 956)

You want to photograph a circular diffraction pattern whose central maximum has a diameter of $1.0 c m$ . You have a helium neon laser $(λ = 633 nm)$ and a $0.12 - m m$ -diameter pinhole. How far behind the pinhole should you place the screen that’s to be photographed?

Short Answer

Expert verified

Distance for the screen to be photographed, $d$ $= 0.777 m$

Step by step solution

Aperture Diffraction

When light passes through a narrow opening, such as an aperture with a low f-number, it causes lens diffraction, which is an optical interference.

When the wavelength of light and the size of the opening are about the same, lens diffraction occurs.

Find the distance

In the aperture diffraction experiment, the center width is given by,

$w = \frac{2.44 λ L}{D}$

We can find $L$ by solving parametrically.

$L = \frac{w D}{2.44 λ}$

Find the distance

This will be the length in our situation.

$L = \frac{w D}{2.44 λ}$

localid="1650215739018" $L = \frac{1 \times 10^{- 2} m \times 1.2 \times 10^{- 4} m}{2.44 \times 6.33 \times 10^{- 7} m}$

$= 0.777 m$

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You want to photograph a circular diffraction pattern whose central maximum has a diameter of $1.0 c m$ . You have a helium neon laser $(λ = 633 nm)$ and a $0.12 - m m$ -diameter pinhole. How far behind the pinhole should you place the screen that’s to be photographed?

Short Answer

Step by step solution

Aperture Diffraction

Find the distance

Find the distance

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You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.0cm. You have a helium neon laser (λ=633nm)and a0.12-mm-diameter pinhole. How far behind the pinhole should you place the screen that’s to be photographed?

Short Answer

Step by step solution

Aperture Diffraction

Find the distance

Find the distance

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Fundamentals of Physics

Classical Mechanics

Dynamics

Waves Physics

Magnetism

Modern Physics

Study anywhere. Anytime. Across all devices.

You want to photograph a circular diffraction pattern whose central maximum has a diameter of $1.0 c m$ . You have a helium neon laser $(λ = 633 nm)$ and a $0.12 - m m$ -diameter pinhole. How far behind the pinhole should you place the screen that’s to be photographed?