The Optics Laboratory

Science and Technology · 10 questions

Basic, advanced, and applied questions on reflection, refraction, lenses, and optical instruments.

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1. What is it called when light strikes a surface and returns to the medium it came from?

   1. Reflection
   2. Absorption
   3. Refraction
   4. Scattering
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   A) Reflection

2. If a ray enters water from air parallel to the surface normal, what direction does it follow at the boundary?

   1. Direction away from the normal
   2. Direction parallel to the surface
   3. Direction toward the normal
   4. Direction parallel to the surface normal
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   D) Direction parallel to the surface normal

3. What is the term for a converging lens bringing rays parallel to its principal axis together at the focus?

   1. Absorption
   2. Reflection
   3. Focusing
   4. Scattering
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   C) Focusing

4. Which telescope design uses a large primary mirror to collect light for astronomical observation?

   1. Refracting telescope
   2. Galilean telescope
   3. Reflecting telescope
   4. Compound microscope
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   C) Reflecting telescope

5. What are the defining properties of an image in a plane mirror?

   1. Virtual, inverted, and reduced
   2. Real, upright, and same size
   3. Real, inverted, and magnified
   4. Virtual, upright, and same size
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   D) Virtual, upright, and same size

6. Which commonly used unit of lens power equals the reciprocal of focal length in meters?

   1. Radian
   2. Diopter
   3. Meter
   4. Candela
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   B) Diopter

7. Light passes obliquely from higher to lower refractive index, without total internal reflection. How does its angle to the normal change?

   1. Larger angle
   2. Smaller angle
   3. Zero angle
   4. Same angle
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   A) Larger angle

8. In a compound microscope, the object lies between f and 2f of the objective. What are the intermediate image's properties?

   1. Real, upright, and reduced
   2. Virtual, upright, and magnified
   3. Virtual, inverted, and same size
   4. Real, inverted, and magnified
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   D) Real, inverted, and magnified

9. What optical phenomenon separates white light into different colors in a prism?

   1. Polarization
   2. Dispersion
   3. Absorption
   4. Reflection
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   B) Dispersion

10. For a thin converging lens, what are the image properties when the object is beyond 2f?

    1. Virtual, upright, and magnified
    2. Real, inverted, and reduced
    3. Virtual, inverted, and same size
    4. Real, upright, and magnified
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    B) Real, inverted, and reduced