Daily Practice Problems undefined The Human Eye and the Colourful World

Question 1:

Image formed on retina in human eye is:

(a) erect but looks inverted

(b) inverted but looks erect

(d) inverted and looks also inverted

Question 2:

Eye lens is:
(a) converging
(b) diverging
(c) convex and concave
(d) none of these

Question 3:

The part of the eyes refracts light entering the eye from external objects is

(a) lens

(b) cornea

(d) pupil

Question 4:

The light sensitive cell present on retina and is sensitive to the intensity of light is:

(a) cones

(b) rods

(d) none of these

Question 5:

The clear sky appears blue because

(а) blue light gets absorbed in the atmosphere.

(b) ultraviolet radiations are absorbed in the atmosphere.

(d) light of all other colours is scattered more than the violet and blue colour lights by the atmosphere.

Question 6:

One cannot see through the fog, because

(a) refractive index of the fog is very high

(b) light suffers total reflection at droplets

(d) light is scattered by the droplets

Question 7:

Perception of colours by human eye is possible:

(a) at retina

(b) by rod shaped cells of retina

(d) by yellow spot.

Question 8:

The black opening between the aqueous humour and the lens is called

(a) retina

(b) iris

(d) pupil

Question 9:

The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light

(a) is scattered the most by smoke or fog.

(b) is scattered the least by smoke or fog.

(d) moves fastest in air.

Question 10:

The focal length of the eye lens increases when eye muscles

(a) are relaxed and lens becomes thinner

(b) contract and lens become thicker

(d) contract and lens become thinner

Question 11:

What is colour-blindness? What kind of retinal cells are lacking in person suffering from this defect?

Question 12:

Why there is no dispersion of light refracted through a rectangular glass slab?

Question 13:

What is astigmatism? What causes astigmatism? How is astigmatism corrected?

Question 14:

What is meant by ‘persistence of vision’? We are able to see the movie picture in a cinema hall. How does this happen?

Question 15:

Why does it take some time to see objects in a dim room when you enter the room from bright sunlight outside?

Question 16:

What is Tyndall effect? Explain with an example.

Question 17:

A person needs a lens of power -4.5 D for correction of her vision.

(a) What kind of defect in vision is she suffering from?

(b) What is the focal length of the corrective lens?

Question 18:

A person cannot see objects nearer than 75 cm from his eyes while a person with normal vision can see objects upto 25 cm from his eyes. Find the nature, the focal length and the power of the correcting lens used for the defective vision.

Question 19:

A person can see clearly only up to 3 metres. Prescribe a lens for spectacles so that he can see clearly up to 12 metres.

Question 20:

Write about power of accommodation of human eye. Explain why the image distance in the eye does not change when we change the distance of an object from the eye?

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Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic Class 10 Science The Human Eye and the Colourful World you have learned to real-life situations. It helps you bridge the gap between abstract knowledge and practical scenarios, making the learning more relevant and meaningful.
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In summary, problem-solving after learning a theoretical concept on CBSE The Human Eye and the Colourful World Class 10 Science is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.

You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.

Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.

All About Daily Practice Problems on Class 10 Science The Human Eye and the Colourful World NCERT Chapter 10

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 10 Science The Human Eye and the Colourful World NCERT Chapter 10 useful.

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