Question

Solve the following crossword with the help of the given clues: Across (1) A microscope consisting two convex lenses (3) The jelly-like substance that fills the area of the eyeball between the retina and the lens. (5) A lens mounted in a frame used to make an object appear larger than it really is (7) The organ of the body with which humans are able to see (9) The clear, watery fluid that fills the chamber of the eye between the cornea and the lens. (11) An optical instrument used to view distant objects. It makes far away objects appear larger when viewed through it. (12) Defect of the human eye, by virtue of which a person can see distant objects but he cannot see nearby objects clearly.
Down (1) The front transparent part of the eye that is bulged outwards. Light from objects enters the eye through it. (2) An optical device consisting of a convex lens of small focal length that is used to make things appear larger. (4) An apparatus for taking photographs. (6) The flat-colored membrane in the lens that contacts the size of the pupil (8) The opening in the Centre of the iris through wheels light enters the eye. (10) The defect of the human eye due to which a person is able to near objects at close range better than distant objects.

Answer 1

Hint: Answer for clue (1) in across section is: COMPOUNDMICROSCOPE , in which the fourteenth letter ‘s’ is the starting letter for the answer of clue (2) in down section and its answer is SIMPLE MICROSCOPE.
Now, you have many clues, continue in the same manner.

Complete step by step answer:
Across
(1) Compound microscope: The term “compound” in compound microscopes refers to the microscope having more than one lens. It is a device with a system of combination of lenses, a compound microscope consists of two optical lenses, called the objective lens and the ocular lens.
(3) Vitreous humour: The vitreous humour in our eyeball performs a vital role in protecting our eye. Its most important function is to maintain the shape of the eyeball to be spherical.
(5) Magnifying glass: A magnifying glass is just a convex lens with a handle, that is used to produce a magnified image of any object.
(7) Human eye.
(9) Aqueous humour: The function of the aqueous humor is to nourish the lens and maintain its pressure within the eyeball. There is no blood supply to the lens and cornea , so it’s the aqueous humor whose job is to carry nutrients to these structures.
(11) Telescope.
(12) Hypermetropia: It can be corrected using a convex lens.

Down
(1) Cornea: cornea's main function is to refract or bend the light entering the eye at the surface.
(2) Simple microscope.
(4) Camera.
(6) Iris: It’s function is to control the size of the pupil.
(8) Pupil: It’s function is to regulate the amount of light entering. In brighter light it contracts so that less amount of light enters and in darker light it expands so that more light could enter.
(10) Myopia: It can be corrected using a concave lens.

Note:
The main and only difference between the vitreous humor and the aqueous humor is that there is a set amount of the vitreous humor in our eye, and it does not move.
The difference between a simple and compound microscope is that a simple microscope has one lens whereas a compound microscope has an objective lens and an eyepiece with a longer focal length.