Question

True of False:

1. When light traveling in air (of index 1.00) reflects off of a thin film of oil (of index 1.45) that is coating a piece of glass (of index 1.50), there is a relative phase shift of half a wavelength (in oil) due to reflection at the film boundaries.

2. A ray of light is incident on a material interface where n₂ is less than n₁. For incident angles less than or equal to the critical angle, the ray undergoes total internal reflection.

3. For the right object locations, a convex lens can produce real, inverted images that are either smaller than, equal to, or larger than the object height.

4. A plane mirror produces virtual images with a magnification equal to 1.

5. When an object is placed at the center of curvature of a concave mirror, the image is real and inverted.

Answer 1

Answers :

True of False:

1. When light traveling in air (of index 1.00) reflects off of a thin film of oil (of index 1.45) that is coating a piece of glass (of index 1.50), there is a relative phase shift of half a wavelength (in oil) due to reflection at the film boundaries. [ TRUE ]

2. A ray of light is incident on a material interface where n2 is less than n1. For incident angles less than or equal to the critical angle, the ray undergoes total internal reflection. [ FALSE ]

3. For the right object locations, a convex lens can produce real, inverted images that are either smaller than, equal to, or larger than the object height.  [ TRUE ]

4. A plane mirror produces virtual images with a magnification equal to 1. [ TRUE ]

5. When an object is placed at the center of curvature of a concave mirror, the image is real and inverted. [ TRUE ]