Grade 12General Physics

a light ray is incident on a transparent sphere of index root 2 at an angle of incidence =45 ^o . what is the deviation of a tiny fraction of ray which enters sphere undergoes two internal reflections and then refracts out into air

bk

7 Years agoGrade 12

1 Answer

Vikas TU

7 Years ago

At first surface apply the Snell's law,

n1*sint(thetha1) = n2*sin(thetha2)

root2*sinthetha2 = 1/root(2)

thetha2 = 30 degree.

The refrcting angle that is r = 30 degree.

Also from TIR concept, r = r' = 30°

Apply the Snell's law again at second surface

we get,

e = 45°

Deviation at the first surface
= i - r = 45° - 30° = 15°

Deviation at 2nd surface
= e - r = 45° - 30° = 15°

Total Deviation = 15° + 15° = 30°

(total deviateion always gets add up)

In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?

general physics

1 Answer Available

Last Activity: 9 Months ago

moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane

general physics

1 Answer Available

Last Activity: 3 Years ago

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator

general physics

1 Answer Available

Last Activity: 3 Years ago

The length of a massless rod is measured using vernier callipers having 10 vernier scale divisions and least count of 0.1 mm. Two masses 1.00 ± 0.01 kg and 4.00 ± 0.02 kg are attached to its ends. If reading of vernier scale is 5 divisions coinciding with 1.3 cm, what is the % error in locating centre of mass from lighter mass

general physics

2 Answers Available

Last Activity: 3 Years ago

A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?

general physics

1 Answer Available

Last Activity: 3 Years ago

View all Questions

a light ray is incident on a transparent sphere of index root 2 at an angle of incidence =45 o . what is the deviation of a tiny fraction of ray which enters sphere undergoes two internal reflections and then refracts out into air

bk

1 Answer

Vikas TU

Other Related Questions on general physics

In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?

moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction ofthe earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate thedeviation (a) at 40 latitude, (b) at the poles, and (c) at the equator

A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?

a light ray is incident on a transparent sphere of index root 2 at an angle of incidence =45 ^o . what is the deviation of a tiny fraction of ray which enters sphere undergoes two internal reflections and then refracts out into air

. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator