Practice Test-Class 10 -Science- Physics-Chapter 11:The Human Eye And The Colourful World

A person wears glasses of power −2.5 D. The defect of the eye and the far point of the person without the glasses are respectively

The sky would appear red instead of blue if

A person can see clearly objects between 15 and 100 cm from his eye. The range of his vision if he wears close fittings spectacles having a power of 0.8 dipole is

A person is suffering from myopic defect. He is able to see clear objects placed at 

Which phenomenon does not play a role in the formation of rainbow ?

When white light passes through the achromatic combination of prisms, then what is observed

The near point of a person is 

Long-sightedness or hypermetropia can be corrected by

The process of re-emission of absorbed light in all directions with different intensities by the atom or molecule is called ____________.

Which of the following phenomena cannot be explained by scattering of light?

The near point of a hypermetropic person is 75 cm from the eye. What is the power of the lens required to enable the person to read clearly a book held at 25 cm from the eye?

Sky looks bright from the earth on a sunny day but from any space station it is dark because

A man can see the object between 15 cm and 30 cm. He uses the lens to see the far objects. Then due to the lens used, the near point will be at

A person who can see the nearer objects clearly but not distant objects is suffering from ....................

A large-angle prism deviates a light ray

Stars are not visible in the day time because

Match the column I with column II and select the correct option from the codes given below. 

How is rainbow formed?

A man suffering from myopia can read a book placed at 10 cm distance. For reading the book at a distance of 60 cm with relaxed vision, the focal length of the lens required will be:

Anil, an 8 th grade student, was asked to draw a figure explaining how the mammalian eye collects and focuses light, converting it into electrical signals. Which of the following flow charts correctly represents the process?

A person is suffering from 'presbyopia' ( myopia and hyper metropia both defects ) should use

________ lens is used to correct the defect of vision termed as presbyopia.

Rising and setting sun appears to be reddish because:

In Section A, defects of eye are given, in Section B, effects arising due to defects are given and in section C, remedies are given using lenses. Find the correct pair.

Read the given statements and mark the correct option.

A man can see distinctly from a distance of 0.5m. If he wants to read a book placed at a distance of