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CBSE 12th Standard Physics Subject Wave Optics Value Based Questions 3 Mark Questions With Solution 2021

Published on: 31/05/2021

QB365 Provides the Value Based Questions Papers for Class 12 Physics, and also provide the detail solution for each and every Value Based Questions. Value Based Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams

Download CBSE Class 12th Standard CBSE Physics question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Physics

Questions + Answers key

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Std: 12th Standard CBSE - Physics

chapter: - Value Based Questions

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Questions:

Generic 3

2 x 3 = 6

Two boys, on their way from school were discussing seriously about something. They both were blowing soap bubbles and were thrilled to watch the expanding bubble with spectacular colour rings. Rita, a class XII student, was watching them for a long time, walking behind them. Suddenly she realised that the kids did not look at the traffic in that junction area. She rushed to them and instructed them to be cautious while on the road. She also explained the importance of traffic rules and told them that obeying traffic rules not only makes us safe but also others safe.
(i) What are the values highlighted by Rita
(ii) why are colours formed on bubbles?

Sumeet a 5^th class student observed a coloured film of oil on water when illuminated by white light. He felt happy and surprised to see this. His teacher explained him the reason behind it. The child then gives an example of spreading of kerosene oil on water to prevent malaria and dengue.
(i) What value was displayed by his teacher?
(ii) Name the phenomenon involved.

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Answers Key:

Generic 3

2 x 3 = 6

(i) Obeying road rules, alertness, concern in others life, clarity of knowledge
(ii) due to superposition of incident and reflected waves of white light by thin film(interference)

(i) displayed by teacher is appreciation of nature.
(ii) The phenomenon involved in interface.