HSC Science (Computer Science) 12th Board ExamMaharashtra State Board
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# If the Difference in Velocities of Light in Glass and Water is 2.7 X 10 ^7 M/S, Find the Velocity of Light in Air. - HSC Science (Computer Science) 12th Board Exam - Physics

ConceptEquation for Velocity and Energy at Different Positions of Vertical Circular Motion

#### Question

If the difference in velocities of light in glass and water is 2.7 x 107 m/s, find the velocity of light in air. (Refractive index of glass = 1.5, Refractive index of water = 1.333)

#### Solution

u=C/v

:.v_g=C/mu_g

v_w=C/mu_w

:.v_w-v_g=C/mu_w-C/mu_g

2.7xx10^7=C(3/4-2/3)

2.7xx10^7=C((9-8)/12)

C = 2.7x12x107

=3.24x108m/ s

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#### APPEARS IN

2013-2014 (March) (with solutions)
Question 7.1.2 | 2.00 marks

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Solution If the Difference in Velocities of Light in Glass and Water is 2.7 X 10 ^7 M/S, Find the Velocity of Light in Air. Concept: Equation for Velocity and Energy at Different Positions of Vertical Circular Motion.
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