Question

A laser diffraction pattern results in y = 6.0 cm, and the distance from the gap to the screen is D = 12 cm. The tangent of θ would be equal to . Calculating the inverse (tan–1) of the value for the tangent of θ would give us a diffraction angle, θ, of degrees.

Answer 1

Answer : $\theta=26.56\ ^0$

Explanation :

It is given that,

A laser diffraction pattern results in y = 6.0 cm

Distance from gap to the screen, D = 12 cm

We know that the relation between $\theta$, y and D is

$tan\theta=\dfrac{y}{D}$

$tan\theta=\dfrac{6\ cm}{12\ cm}$

$\theta=tan^{-1}\ 0.5$

So, $\theta=26.56\ ^0$

Hence, this is required solution.

Answer 2

The tangent of θ would be equal to  ⇒ 0.5.

Calculating the inverse (tan–1) of the value for the tangent of θ would give us a diffraction angle, θ, of  ⇒ 27 degree