16. Light Class 8 Science [LATEST] Solutions Additional Questions With Solutions in English - CBSE Study
NCERT Solutions for Class 8 Science are carefully prepared according to the latest CBSE syllabus and NCERT textbooks to help students understand every concept clearly. These solutions cover all important 16. Light with detailed explanations and step-by-step answers for better exam preparation. Each Additional Questions With Solutions is explained in simple language so that students can easily grasp the fundamentals and improve their academic performance. The study material is designed to support daily homework, revision practice, and final exam preparation for Class 8 students. With accurate answers, concept clarity, and structured content, these NCERT solutions help learners build confidence and score higher marks in their examinations. Whether you are revising a specific topic or preparing an entire chapter, this resource provides reliable and syllabus-based guidance for complete success in Science.
Class 8 English Medium Science All Chapters:
16. Light
5. Additional Questions With Solutions
Additional Questions And Answers
Ques: What is cornia?
Ans: Outer coat of the eye is white. Its transparent front part is called cornea.
Ques: What is iris? Write the function of iris?
Ans: Behind the cornea, we find a dark muscular structure called iris.
Function;
(i) The iris controls the size of the pupil.
Ques: Give regions;
(i) The outer most covering of eyes are white and hard.
Ans: As it can prevent the inner most part of eyes by accidents.
Ques: Differentiate between regular and diffused reflection. Does diffused reflection mean the failure of the laws of reflection?
Ans:
|
Irregular reflection |
Regular reflection |
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No, diffused reflection is not due to the failure of the laws of reflection
Ques: Fill in the blanks in the following :
(i) A person 1 m in front of a plane mirror seems to be __1__________ m from his image.
(i) If you touch your ____________ ear with right hand in front of a plane mirror it will be seen in the mirror that your right ear is touched with ____________ .
(iii) The size of the pupil becomes ____________ when you see in dim light.
(iv) Night birds have ____________ cones than rods in their eyes..
Que: Draw a labeled sketch of the human eye.
Ans:
Ques: What is blind spot?
Ans: At the junction of the optic nerve and the retina, there are no sensory cells, so no vision is possible at that spot. This is called the blind spot.
Ques: write kinds of optic nerves.
Ans: There are two kinds of nerve cells
(i) Cones, which are sensitive to bright light.
(ii) Rods, which are sensitive to dim light.
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