A telescope has an objective lens with a focal length of 85 cm and an eyepiece o

Question

A telescope has an objective lens with a focal length of 85 cm and an eyepiece of focal length 2.4 cm. What would be the lens power in diopters of a third lens touching the objective lens to achieve a magnification of 247.916667? A) -1.907051 D B) -2.5585 D C) -1.008 D D) -2.91D E) -2.5092 D If angle_incident = 50 degree when n_incident = 1.05, and n_refracted = 1.55,find angle_refracted = _____ degree A) 31.3 degree B) 45.962666 degree C) 31.5 degree D) 47.62 degree E) 25.806452 degree An underwater scuba diver sees the sun at an apparent angle of 48 degree from the vertical. How far is the sun above the horizontal water = 1.333) A) 43.2 degree B) 27.216 degree C) 36.288 degree D) 7.857 degree E) 64 degree

Explanation / Answer

since 11th is solved

solving 12th question

by snell's law

n2/n1=sin(incidence)/sin(refracted)

1.55/1.05=sin(50)/sin(refracted)

we got refracted angle=31.3 degree

option(A) is correct

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.