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

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

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.

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

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?

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

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

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