Tag: physics

Quizzes (598) Questions (13441)

Questions Related to physics

Multiple choice physics the human eye and the colourful world human eye and its working what is inside our eyes? human eye and defects of vision

The impression of the image formed on the retina of the human eye remains for about:

  1. $\dfrac{1}{10}s$
  2. $\dfrac{1}{24}s$
  3. $\dfrac{1}{16}s$
  4. $\dfrac{1}{20}s$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The image formed on retina do not fade away instantaneously but its impression remains on the retina for about $\frac{1}{16}s$, even after removal of the object.

Multiple choice physics the human eye and the colourful world human eye and its working what is inside our eyes? human eye and defects of vision

Aqueous humour is a _________ and  vitreous humour is a _________.

  1. transparent jelly, viscousfluid

  2. transparent jelly, watery fluid

  3. viscous fluid, viscous fluid

  4. viscous fluid, transparent jelly
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The space between cornea and eye lens is filled with a viscous liquid called aqueous humour and the space between eye lens and retina contains a transparent jelly called vitreous humour.

Multiple choice physics the human eye and the colourful world human eye and its working what is inside our eyes? human eye and defects of vision

Read the statements and mark the correct significance of eyelids:
a. It protects the eye from foreign objects.
b. It shut out the light when not required.
c. It makes the eyes beautiful.

  1. a and b

  2. b and c

  3. a and c

  4. All are true
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nature has provided eyes with eyelids to protect them from any object entering the eyes. It also shut off the light when not required.

Multiple choice physics the human eye and the colourful world human eye and its working what is inside our eyes? human eye and defects of vision

There is a point in our eyes where no image is formed. That point is known as blind spot. Which animal do not have this blind spot?

  1. Fish

  2. Ostrich

  3. Octopus

  4. Rat
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The photoreceptors in the octopus retina are located in the inner part of the eye while the cells that carry information to the brain,are in the outer portion of its eye.

Multiple choice physics the human eye and the colourful world human eye and its working what is inside our eyes? human eye and defects of vision

In dim light:

  1. rods are sensitive but cones are not

  2. cones are sensitive but rods are not

  3. both rods and cones are sensitive

  4. neither rods nor cones are sensitive
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rods and cones are light sensitive cells. Rods respond to different degrees of brightness and darkness. Cones respond mainly to colour of the incident light.

Multiple choice physics the human eye and the colourful world human eye and its working what is inside our eyes? human eye and defects of vision

Mark the correct statement:
a. Blind spot position varies between the left eye and the right eye.
b. For both the eyes blind spot is not exactly in the same place.
c. Octopus do not have the Blind spot.

  1. a and b

  2. b and c

  3. a and c

  4. All
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Blind spot position varies in both eyes. Octopus do not have any blind spot.A point in our eyes where no image is formed,that point is known as blind spot.