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Write the phenomenon by which blue colour of sky can be explained.

Important Questions on Ray Optics and Optical Instruments

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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 10
Write the speed of light in vacuum.
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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 11
What is the critical angle of a medium whose refractive index is 2 ?
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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 12
Under what conditions total internal reflection occurs ?
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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 13
A curved surface is convex to the incident light does it form real or virtual image ?
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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 14
A bi-convex lens of focal length f is bisected along the principal axis. What is the focal length of each half ?
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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 15
Write the thin lens formula and describe the symbols used.
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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 16
Which colour of light travels with least speed in a glass prism ?
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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 17
Explain how an air bubble in water behaves as a diverging lens.