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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 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 17
Explain how an air bubble in water behaves as a diverging lens.
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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 18
A distance x separates two thin convex lenses of focal lengths f and 2f For what value of x a parallel beam of light falling on this combination parallel to the common principal axis emerges out of the combination as a parallel beam ?
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Gamma Question Bank for Medical Physics>Chapter 26 - Ray Optics and Optical Instruments>Assignment>Q 19
Show that for a thin prism the deviation is given by δ=A(μ-1).