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3 years ago

Which of the following is the combination that is used in the formation of achromatic lenses?

Physics

2 answers:

andrezito [222]3 years ago

8 0

Convex one and 1 plane mirror is your answer

Lina20 [59]3 years ago

5 0

Answer:

convex and 1 plane mirror

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Monochromatic light passes through two narrow slits 0.23 mm apart and forms an interference pattern on a screen 2.13 m away. If

Slav-nsk [51]

Given:

The distance between the two narrow slits is

$\begin{gathered} d=\text{ 0.23 mm} \\ =2.3\times10^{-4}\text{ m} \end{gathered}$

The distance between the slit and the screen is

$D=\text{ 2.13 m}$

The wavelength of the light is

$\begin{gathered} \lambda\text{ = 645.78 nm} \\ =645.78\times10^{-9}\text{ m} \end{gathered}$

Required: Distance of the third bright fringe from the central maximum.

Explanation:

The third bright fringe will have m = 3.

The distance of the third bright fringe from the central maximum can be calculated by the formula

$y=\frac{m\lambda\text{ D}}{d}$

On substituting the values, the distance can be calculated as

$\begin{gathered} y=\frac{3\times645.78\times10^{-9}\times2.13}{2.3\times10^{-4}} \\ =0.0179\text{ m} \end{gathered}$

Final Answer: The distance of the third bright fringe from the central maximum is 0.0179 m.

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1 year ago

On a riding lawn mower how long does it take to cut 5 acres

defon

3 hours or so on your average riding lawn mower. Can depend on the length of the grass and the deck size of mower. Round about... 3 hours.

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3 years ago

Once a well has reached the water table, it will not run dry true or false? -earth science

prohojiy [21]

No, this is false.

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