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Class 12 Physics Notes

on July 25, 2024

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Chapter 12 Wave Optics

Class12

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CLASS 6 Chapter 2 NCERT Poorvi QnA

### Page 13: "The Raven and the Fox" #### Activities before reading: 1. **Frogs croak, but did you know that ravens also croak?** - **Yes, ravens croak.** 2. **Which animal is shown to be cunning in stories? Circle the correct answer.** - (b) fox ### Page 14: Let us discuss 1. **Fill in the blanks by choosing the correct option.** (a) Stanza 1 - (i) Mr Raven is a **bird**. (bird/frog) - (ii) The name of the fox is **Reynard**. (Raven/Reynard) - (iii) Mr Raven had **a piece of food** in his beak. (a piece of food/a bunch of leaves) (b) Stanza 2 - (i) The Fox calls the Raven a **good-looking** bird. (foolish/good-looking) - (ii) The Fox asks the Raven to **sing**. (dance/sing) - (iii) The Raven and the Fox live in the **woods**. (trees/woods) (c) Stanza 3 - (i) The Raven **forgot** that he croaked. (remembered/forgot) ...

Class12 MCQ Wave Optics

Multiple-Choice Questions on Young's Double-Slit Experiment 1. Path Difference and Bright Fringe a) Path difference = \( n\lambda \) b) Path difference = \( (n + \frac{1}{2})\lambda \) c) Path difference = \( \frac{\lambda}{2} \) d) Path difference = \( \lambda \) 2. Effect of Increasing Wavelength a) Increase b) Decrease c) Remain the same d) Disappear 3. Fringe Visibility Condition a) Incoherent b) Coherent c) Unpolarized d) Of different wavelengths 4. Number of Fringes Calculation If the distance between the slits is 0.2 mm and the screen is 1 m away, using light of wavelength 600 nm, what is the fringe spacing? a) 3 mm b) 2...

Class 12 Wave Optics IMPORTANT QUESTIONS for 2024-2025

Wave Optics - Important Questions Wave Optics - Important Questions Multiple Choice Questions (MCQs): 1. Which of the following phenomena is explained by Huygens' principle? a) Photoelectric effect b) Reflection and refraction c) Compton effect d) Raman effect 2. In Young’s double slit experiment, the fringe width increases if: a) The wavelength of light decreases b) The distance between the slits increases c) The distance between the screen and the slits decreases d) The wavelength of light increases 3. The ratio of intensities of two waves interfering at a point is 9:4. The ratio of the amplitudes of the two waves is: a) 3:2 b) 2:3 c...

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Class 12 Physics Notes

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