JAC 12th Physics Important Questions 2023Ch10 Wave Optics

JAC 12th Physics Important Questions 2023Ch10: झारखण्ड बोर्ड कक्षा 12th सभी विद्यार्थियों के लिए Physics Unit 6. में Chapter 10 Wave Optics के पिछले वर्षो में जो भी प्रश्न पूछे गए हैं, उनकी चर्चा हम इसमें करेंगे तो इन Important Questions को पढ़ लीजिए.

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JAC 12th Physics Important Questions 2023Ch10 Wave Optics

रांची: झारखंड एकेडमिक काउंसिल ( JAC Board) कक्षा JAC 12th Physics Important Question के पिछले वर्षों के सभी महत्वपूर्ण प्रश्न (important Questions) आपको यहाँ पर बताए जा रहे है, जो बोर्ड परीक्षा 2023 के लिए बहुत महत्वपूर्ण है. अगर आप इन सभी प्रश्नों को याद कर लेते हो तो अवश्य ही आप JAC Board class 12th Physics exam 2023 में अच्छे अंक प्राप्त कर सकते हो.

यदि आप ऐसे ही सभी विषयों के Chapterwise Important Questions उत्तर चाहते हैं तो हमारे वेबसाइट jharkhandlab.com से जुड़े रहे.

विद्यार्थी इसका उत्तर स्वयं करें। ये सारे प्रश्न आपके परीक्षा (JAC 12th Physics Important Question For Board Exams)में बार – बार पूछे जा रहे है। इसमें आपको सभी chapter का अलग-अलग पिछले 16 से 17 वर्षों के महत्वपूर्ण प्रश्न मिलेंगे। यानि 2006-2022 इसमें आपको ये भी बताया जा रहा है कि कौन से प्रश्न किस तरह से एवं कितने marks के पूछे जा रहें है।

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JAC 12th Physics Previous Years Important Questions –

Q1. State Huygens principle of secondary wavelength . (2 Marks) [JAC –2006]
Q2. State and explain Brewster law. ( 3 marks) [JAC –2006, 2009, 2016, 2019]
Q3. What is fringe width? Derive an expression for fringe width.
(5 marks) [JAC 2008, 2011]
Q4. State Huygen’s principle of light and prove the law of reflection on its basis. (5 marks) [JAC –2010]
Q5. What is interference?Give two examples in our daily life.(2 Marks) [JAC –2011]

Q6. Mirage is observed in desert due to – (1 marks) [JAC –2012]
a) Interference of light
b) Diffraction of light
c) Total internal reflection of light
d) Double refraction
Q7. Why the interference pattern not detected when two coherent source are far apart?(2 marks)[JAC 2012]


Q8. Which phenomenon shows that light is a transverse wave? (1 marks) [JAC – 2013, 2019]
a) Diffraction
b) Refraction
c) Polarisation
d) interference
Q9.Write down the Huygen’s principle. Using Huygens principle prove the law of reflection and refraction. (5 marks) [JAC 2013,2016]
Q10. Which of phenomenon establish the particles nature of light?(1 marks) [JAC 2014]
a) Interference
b) Diffraction
c) Polarisation
d) photoelectric effects


Q11. What is the principle of superposition? Find the condition for constructive and destructive interference of light.(5 marks)[JAC 2014]
Q12. A plane wavefront is a part of a (1 marks)[ JAC 2015]
a) spherical wavefront
b) cylinderical wavefront
c) both a and b
d) None of these


Q13. What do you mean by coherence ? How are coherent source produced in laboratory?(3 marks) [JAC 2015]
Q14. Distinguish between diffraction and interference . Discuss the diffraction of light due to a single thin slit. (5 marks) [JAC
2015, 2017]
Q15. What is polarisation of light? See Q2. [3 marks] [JAC 2016, 2019]

Q16. In young’s experiment , the slit are 0.03 cm apart and screen is 1.5m away from the surface of the slits. The distance between the central fringe and the fourth bright fringe is 1cm. Find the wavelength of light used. [3 marks] [JAC 2016]
Q17. Derive Young’s double slit experiment with necessary theory and obtained expression for fringe width. (5 marks) [JAC 2018]


Q18. Define wavefront and seccondary wavelength. Establish the law of refraction of light on the basis of Huygen’s principle. (5 marks) [JAC 2019]
Q19. Huygen’s wave theory of light cannot explain (1 mark)(JAC 2020)
a) Reflection of light
b) Refraction of light
c) Total internal reflection
d) photoelectric effect
Q20. What do you understand by the term ‘interference of light’ ? Mention the necessary condition for sustained interference. (3 marks) [JAC 2020]


Q21. What do you understand by the term ‘interference’? Describe Young’s double slit experiment and discuss the formation of finges. (5 marks) [JAC 2020]
Q22. What are coherent sources of light?(2022)
Q23. What do you understand by the term interference of light? Mention the necessary conditions for sustained Interference.(2022)
Q24. Prove Snell’s law of refraction on the basis of Huygens principle.(2022)
Q25. What is meant by reflection of light.(2022)

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