Doubtly : Engineering - Notes, Viva, Questions, and Answers

0 votes

1 answer 123 views

Why does the sky appear dark instead of blue to an astronaut?

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 148 views

Why does the Sun appear reddish early in the morning?

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 121 views

Explain why the planets do not twinkle?

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 107 views

Why do stars twinkle?

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 165 views

What happens to the image distance in the eye when we increase the distance of an object from the eye?

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 155 views

Why is a normal eye not able to see clearly the objects placed closer than 25 cm?

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 134 views

Make a diagram to show how hypermetropia is corrected. The near point of a hypermetropic eye is 1 m.

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 227 views

The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 113 views

A person needs a lens of power -5.5 dioptres for correcting his distant vision. For correcting his near vision he

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 115 views

The change in focal length of an eye lens is caused by the action of the (a) pupil (b) retina (c) ciliary muscles(d)iris

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 166 views

The least distance of distinct vision for a young adult with normal vision is about (a) 25 m (b) 2.5 cm (c) 25

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 130 views

The human eye forms the image of an object at its (a) cornea (b) iris (c) pupil (d) retina

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 161 views

The human eye can focus objects at different distances by adjusting the focal length of the eye lens

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 126 views

A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 174 views

What is the far point and near point of the human eye with normal vision?

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 136 views

A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

0 votes

1 answer 143 views

What is meant by power of accommodation of the eye?

answered Dec 14, 2021 in Human Eye and Colourful World by Doubtly (98.9k points)

Recent questions and answers in Human Eye and Colourful World

Most popular tags