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Case Based Questions Test: The Human Eye & the Colourful World - Class 10 MCQ


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10 Questions MCQ Test Online MCQ Tests for Class 10 - Case Based Questions Test: The Human Eye & the Colourful World

Case Based Questions Test: The Human Eye & the Colourful World for Class 10 2024 is part of Online MCQ Tests for Class 10 preparation. The Case Based Questions Test: The Human Eye & the Colourful World questions and answers have been prepared according to the Class 10 exam syllabus.The Case Based Questions Test: The Human Eye & the Colourful World MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Case Based Questions Test: The Human Eye & the Colourful World below.
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Case Based Questions Test: The Human Eye & the Colourful World - Question 1

A narrow beam of white light is passing through a glass prism as shown in the diagram. Study the diagram and answer the questions.

The phenomenon observed in above set-up is

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 1
the phenomenon of splitting of white light into its constituent colours after passing through a prism is called as dispersion of light. When the light enters the prism, all the colours have different speeds due to which it gets split into bands.
Case Based Questions Test: The Human Eye & the Colourful World - Question 2

A narrow beam of white light is passing through a glass prism as shown in the diagram. Study the diagram and answer the questions.

In nature, this phenomenon is observed in

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 2
Rainbow is caused by dispersion of sunlight by tiny water droplets present in the atmosphere which is one of the applications of dispersion of light.
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Case Based Questions Test: The Human Eye & the Colourful World - Question 3

A narrow beam of white light is passing through a glass prism as shown in the diagram. Study the diagram and answer the questions.

Which of the following statement is correct about constituents of white light based on above observations?

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 3

When the light disperses, various bands of light are clearly visible. It is clear from the figure that the violet light suffers maximum deviation and red light suffers minimum deviation. All the colours of the white light move with the same speed in air or vacuum but with different wavelengths and frequencies.

Case Based Questions Test: The Human Eye & the Colourful World - Question 4

A narrow beam of white light is passing through a glass prism as shown in the diagram. Study the diagram and answer the questions.

The cause of dispersion of light is

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 4
The various colours of white light have different extent of refraction in a medium. All colours of light do not travel with the same speed in the medium which is the cause of dispersion of light.
Case Based Questions Test: The Human Eye & the Colourful World - Question 5

A narrow beam of white light is passing through a glass prism as shown in the diagram. Study the diagram and answer the questions.

Read the following statements carefully and choose the correct ones

(I) The prism behaves the same as that of a rectangular glass slab.

(II) All the colours have different angles of deviation in case of dispersion through prism.

(III) All the colours travel with the same speed of light in glass.

(IV) Dispersion of light is observed in the case of rectangular glass slabs.

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 5

A prism is made up of glass in which the faces are joined at a certain angle but in the case of a rectangular glass slab, the opposite faces are parallel to each other. As the light enters in the prism, all the colours travel with the different speed of light because glass is a denser medium as compared to air and dispersion of light is not observed in case of a rectangular glass slab. So, both the prism and rectangular glass slab behave differently.

Case Based Questions Test: The Human Eye & the Colourful World - Question 6

Read the passage in the human eye and answer the questions.

Eye is a natural optical device by which humans could see objects around him. It forms an inverted, real image on a light sensitive surface. It works on the phenomenon of refraction of light through a natural convex lens. However, Meena was unable to see clearly the words written on the black board placed at a distance of approximately 3 m from her. Her mother discussed the same with the doctor. Doctor explained to her about this defect of vision and its correction.

The human eye forms the image of the object at its

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 6
The retina in the human eye consists of contains a large number of light-sensitive cells which help in the organization of visual information. Thus, the retina helps in sending information to the brain due to which a person is able to see.
Case Based Questions Test: The Human Eye & the Colourful World - Question 7

Read the passage in the human eye and answer the questions.

Eye is a natural optical device by which humans could see objects around him. It forms an inverted, real image on a light sensitive surface. It works on the phenomenon of refraction of light through a natural convex lens. However, Meena was unable to see clearly the words written on the black board placed at a distance of approximately 3 m from her. Her mother discussed the same with the doctor. Doctor explained to her about this defect of vision and its correction.

What kind of defect Meena is suffering from?

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 7
Meena was unable to read the words written on the blackboard i.e. she could see the nearby objects clearly but was unable to see the far off objects. Thus, she was suffering from Myopia
Case Based Questions Test: The Human Eye & the Colourful World - Question 8

Read the passage in the human eye and answer the questions.

Eye is a natural optical device by which humans could see objects around him. It forms an inverted, real image on a light sensitive surface. It works on the phenomenon of refraction of light through a natural convex lens. However, Meena was unable to see clearly the words written on the black board placed at a distance of approximately 3 m from her. Her mother discussed the same with the doctor. Doctor explained to her about this defect of vision and its correction.

The possible cause this defect is

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 8
The excessive curvature of eye lens becomes more converging and it results in the elongation of eye ball due to which a person suffers from Myopia.
Case Based Questions Test: The Human Eye & the Colourful World - Question 9

Read the passage in the human eye and answer the questions.

Eye is a natural optical device by which humans could see objects around him. It forms an inverted, real image on a light sensitive surface. It works on the phenomenon of refraction of light through a natural convex lens. However, Meena was unable to see clearly the words written on the black board placed at a distance of approximately 3 m from her. Her mother discussed the same with the doctor. Doctor explained to her about this defect of vision and its correction.

The closest distance up to which a person can see without any strain in the eyes

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 9
A normal eye is not able to see distinctly the objects placed closer than 25 cm, without putting any strain on the eye. This is because the ciliary muscles of eyes are unable to contract beyond a certain limit. If the objects are placed at a distance less than 25 cm from the eye, then the objects appear blurred because light rays coming from the object meet beyond the retina.
Case Based Questions Test: The Human Eye & the Colourful World - Question 10

Read the passage in the human eye and answer the questions.

Eye is a natural optical device by which humans could see objects around him. It forms an inverted, real image on a light sensitive surface. It works on the phenomenon of refraction of light through a natural convex lens. However, Meena was unable to see clearly the words written on the black board placed at a distance of approximately 3 m from her. Her mother discussed the same with the doctor. Doctor explained to her about this defect of vision and its correction.

The defective eye of a person has near point 0.5 m and far point as 3 m. The power of both lens required for reading purpose and seeing far off objects is

Detailed Solution for Case Based Questions Test: The Human Eye & the Colourful World - Question 10
Let the object distance = u
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