Q15.The difference of speed of light in the two media ๐ด and ๐ต๐ฃ๐ด- ๐ฃ๐ต is 2 . 6 ร 107 m s-1. If the refractive index of medium ๐ต is 1 . 47, then the ratio of refractive index of medium ๐ต to medium ๐ด is: (Given : speed of light in vacuum ๐= 3 ร 108 m s-1) (1) 1 . 303 (2) 1 . 318 (3) 1 . 13 (4) 0 . 12
What This Question Tests
This question requires using the relationship between refractive index, speed of light in vacuum, and speed of light in a medium to find the ratio of refractive indices.
Concepts Tested
Formulas Used
n = c/v
๐ NCERT Sections This Tests
10.3 โ (A) The Refractive Index Of Glass Is 1.5. What Is The Speed Of Light In
Physics Class 12 ยท Chapter 10
10.3 (a) The refractive index of glass is 1.5. What is the speed of light in glass? (Speed of light in vacuum is 3.0 ร 108 m sโ1) (b) Is the speed of light in glass independent of the colour of light? If not, which of the two colours red and violet travels slower in a glass prism?
10.1 โ Monochromatic Light Of Wavelength 589 Nm Is Incident From Air On A
Physics Class 12 ยท Chapter 10
10.1 Monochromatic light of wavelength 589 nm is incident from air on a water surface. What are the wavelength, frequency and speed of (a) reflected, and (b) refracted light? Refractive index of water is 1.33.
9.3 โ A Tank Is Filled With Water To A Height Of 12.5 Cm. The Apparent
Physics Class 12 ยท Chapter 9
9.3 A tank is filled with water to a height of 12.5 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4 cm. What is the refractive index of water? If water is replaced by a liquid of refractive index 1.63 up to the same height, by what distance would the microscope have to be moved to focus on the needle again?
๐ Question Details
- Chapter
- Ray Optics
- Topic
- Refractive Index and Speed of Light
- Year
- 2022
- Shift
- 25 Jun Shift 1
- Q Number
- Q15
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 9: Ray Optics and Optical Instruments
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