Tag: images in plane mirror

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Multiple choice physics light, shadows and images introduction to reflection of light light and sight images in plane mirror

For a total internal reflection, which of the following is correct?

  1. Light travel from rarer to denser medium.

  2. Light travel from denser to rarer medium.

  3. Light travels in air only.

  4. Light travels in water only.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The total internal reflection occurs when the ray of light is reflected totally into the same medium even without the presence of a mirror. The total internal reflection occurs when a ray of light travels from denser medium to rarer medium.

Multiple choice physics light, shadows and images introduction to reflection of light light and sight images in plane mirror

Which of the following statement is/ are correct?
I. A person suffering from myopia can see distant obhects clearly.
II.. The bluish color of water in deep sea is only due to reflection of sky in water.
III. In vacuum, all the colored of the light move with the same speed.
IV. At noon, the sun appears white as light is least scattered

  1. I only

  2. II only

  3. I and II only

  4. III and IV only
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Myopia is the inability to see objects clearly when they're too far away. People with myopia can often read or see items within a few feet of their face, but distant objects appear blurred. This condition usually develops in an eyeball that's too long from front to back.

The ocean looks blue because red, orange and yellow (long wavelength light) are absorbed more strongly by water than is blue (short wavelength light). So when white light from the sun enters the ocean, it is mostly the blue that gets returned.

Multiple choice physics light, shadows and images introduction to reflection of light light and sight images in plane mirror

The phenomenon that leads to the bouncing back of light rays is called-

  1. Diffraction

  2. Reflection

  3. Dispersion

  4. Refraction
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
$ \bf{Diffraction} $ is the phenomenon of bending of light waves around the corners of an obstacle or aperture, placed in the path of light beam. 

$ \bf{Reflection} $ is the phenomenon in which light rays on striking a polished surface(such as a mirror) bounce back or are sent back into the same medium. 

$\bf{Dispersion} $ is the phenomenon of splitting of white light into its component colours (VIBGYOR) on passing through a glass prism.

$ \bf{Refraction} $ of light is the phenomenon of bending of light or change in the direction of light, when it passes obliquely from one transparent medium to another.

Hence, the correct answer is OPTION B.