SCIENCE AND TECHNOLOGY

Having two eyes facilitates in:
A: Increasing the field of view
B: Bringing three dimensional view
C: Developing the concept of distance/size.
Then the correct option is/are:

A: Astigmatism usually is caused by an irregularly shaped cornea.
B: Rainbow is the natural phenomenon in which dispersion takes place.

In which of the following cases will no dispersion take place when sunlight passes through it?

Figure a, b, c respectively; indicate the point in case of:

Which of the following graph represents the correct variation of angle of incidence (i) and angle of deviation (δ)?

Which of the following figures correctly represents the passage of white light through prism?

Blue colour of the sky is due to the phenomenon of:

The star appear shifted from their actual position due to the phenomenon of:

When a beam of white light falls on a glass prism, the colour of light which will deviate least is:

With both eyes open, a person’s field of view is about:

A man finds it difficult to read the odometer on the dashboard of the car but is able to clearly read a distant road sign. Which of the following statement is correct about this man?

A got his eye tested. The optician’s prescription for the spectacles was:
Left eye: −3 D
Right eye: −3.50 D
The person is having a defect of vision called:

A person cannot see the distant objects clearly (though he can see the nearby objects clearly). He is suffering from the defect of vision called:

How eyes adjust in order to focus the image of near or distant objects on retina?

The term “accommodation” as applied to the eye, refers to its ability to: