At what angle φ should the laser beam in the figure below be aimed at the mirrored ceiling in order to hit the midpoint of the far wall?

Answer. The midpoint of the far wall, the laser beam should be aimed at an angle of 90 degrees (perpendicular) to the mirrored ceiling.

What is the smallest positive angle relative to the original direction of the laser beam at which the intensity of the light is 1/10 the maximum intensity on the screen?

Expert-Verified Answer. The smallest positive angle, relative to the original direction of the laser beam, at which the intensity of the light is 1/10th the maximum intensity on the screen is approximately 1.590° .

What is the angle of spread of a laser?

Theoretically the angle of spread of the laser beam, in radians, would be its narrowest diameter divided by the wavelength of light . If the beam were 1 mm in diameter then its angular spread would be: A = L/d = 6 x 10-7 m/10-3 m = 6 x 10-4 radians or 60 milliradians.

What is the smallest angle θ1 for which a laser beam will undergo total internal reflection on the hypotenuse of the glass prism?

The smallest angle at which the laser beam undergoes total internal reflection in the hypotenuse of the prism is θ 1 = 17.87 ∘ .

What should be the angle with respect to the incident light ray at which the mirror are fitted?

Mirrors should be placed at an angle 45∘ with respect to the incident light. So, that the rays can move forward.

How does the angle that the laser hits the mirror compare to the angle that it reflects off the mirror?

The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection .

What angle does a laser reflect?

If one or both of the mirrors is curved, all bets are off: the beam gets spread out and distorted, for example. If you really want to reflect the beam right back to its source, then you just take one mirror and place it at 90 degrees to the plane the incident laser beam lies.

How the angle is measured using a laser interferometer?

The laser system measures changes in angle by detecting the relative changes between the optical path lengths in the two “arms” of the interferometer (ΔL) . Consider what happens if the angular reflector is pitched (tipped) away from perfect alignment by an angle θ, as shown in Figure 4.

If a PPP of glass (n=1.9) is tilted at 45^∘ to a laser beam (HeNe-632.8 nm), how thick must the glass be (in inches) to get a displacement of 0.4 in the beam direction?

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If a PPP of glass (n=1.9) is tilted at 45^∘ to a laser beam (HeNe-632.8 nm), how thick must the glass be (in inches) to get a displacement of 0.4 in the beam direction? | Numerade (2024)

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At what angle φ should the laser beam in the figure below be aimed at the mirrored ceiling in order to hit the midpoint of the far wall? ›

References