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प्रश्न
Mention if the following statement is true (T) or false (F) Give reason.
Sometimes medicines dropped into the eyes come into the nose and even throat
विकल्प
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to ______.
What job does the pupil of the eye do?
Name two types of cells in the retina of an eye which respond to light.
Which of the following changes occur when you walk out of bright sunshine into a poorly lit room?
(a) the pupil becomes larger
(b) the lens becomes thicker
(c) the ciliary muscle relaxes
(d) the pupil becomes smaller
The animal which does not have eyes that look sideways is:
(a) Horse
(b) Chicken
(c) Lion
(d) Fish
Mention the characteristics of the image that falls on the retina of the eye.
We see advertisements for eye donation on television or in newspapers. Write the importance of such advertisements.
Give the main function of the following:
Lachrymal glands
Name the following:
Fluid present in the posterior chamber of the eye.
State the Function:
Iris
Choose the Odd One Out:
For the normal human eye, the near point is at ___________ cm.
A small hole of changing diameter at the centre of Iris is called _______.
Write an Explanation.
Minimum distance of distinct vision
Complete the paragraph by choosing the right options given below.
(minimum, near point, 25 cm, farthest, farthest distance, far point)
The _______ distance of an object from a normal eye, at which it is clearly visible without stress on the eye, is called the minimum distance of distinct vision. The position of the object at this distance is called the _______ of the eye, for a normal human eye, the near point is at _______. The _______ distance of an object from a human eye, at which it is clearly visible without stress on the eye is called _______ of distinct vision. The position of the object at this distance is called the _______ of the eye.
The black opening between the aqueous humour and the lens is called ____________.
The image formed on the retina of the human eye is ____________.
A tiny mirror M is fixed on a piece of cardboard placed on a table. The cardboard is illuminated by light from a bulb. The position of eye with respect to position of bulb is shown in the figure as A, B, C and D. In which position mirror will be visible?
 |
 |
 |
 |
| (A) | (B) | (C) | (D) |
Which of the following statements is correct regarding rods and cones in the human eye?
Describe the parts in the external structure of the eye.
