GENERAL SCIENCE CLASS 8 MCQS

A horizontal line that passes through the lens is called:

1. Focal Point
2. Optical Centre
3. Centre of Curvature
4. Principal Axis

The distance between the optical center and the principal focus is called:

1. Focal Length
2. Focal Point
3. Optical Centre
4. Centre of Curvature

The part of an eye acting as a film of camera is:

1. Retina
2. Iris
3. Lens
4. Cornea

The part of an eye acting as a diaphragm of camera is:

1. Cornea
2. Lens
3. Iris
4. Retina

The part of an eye acting as a aperture of camera is:

1. Iris
2. Pupil
3. Cornea
4. Retina

The part of an eye acting as a black point of camera is:

1. Sclera
2. Retina
3. Optic disc
4. Choroid

Which of the following helps to change the shape of the lens in the eye:

1. Ciliary Muscles
2. Extraocular Muscles
3. Iris Muscles
4. Conjunctiva Muscles

Which cells are responsible for vision in bright light and coloured vision:

1. Rod Cells
2. Cone Cells
3. Bipolar Cells
4. Ganglion Cells

Short-sightedness defect can be corrected by wearing a:

1. Convex Lens
2. Concave Lens
3. Prism Lens
4. Cylindrical Lens

The blurred image is formed in front of eyes due to:

1. Light focused in front of the retina
2. Light focused behind the retina
3. Light focused at a point on retina
4. Light focused at a point beyond retina