1st year physics Chapter 9 Important Questions

Learn 1st year physics Chapter 9 Important Questions. These important 1st year physics mcqs, short and long questions are collected by going through different past papers of all Punjab Board Pakistan.

Why are these questions important?

These Questions are taken from past papers of 1st year physics. These questions are top repeated of in previous papers of Physics Class 11 of all Punjab boards as;

      Bahawalpur Board

      D.G.Khan Board

      Faisalabad Board

      Gujranwala Board

      Lahore Board

      Multan Board

      Rawalpindi Board

Content is created and designed with intense care and diligence. Here is only the most important MCQ, short questions and long questions of 1st year physics chapter 9 Physical optics.

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You can easily download in pdf format or view 1st year physics mcqs, short questions and long questions  online. You can easily print these files in simple way. Here you find 1st year physics Chapter 9 Physical Optics important mcqs, short and long questions. By Preparing these important questions, you will achieve splendid marks in Physics Class 11. This content is very helpful for weak students and also helpful for those students that are better at 1st year physics exam preparation. These Questions are based on the current 1st year physics syllabus according to Punjab Textbook Board.

Great Achievement in Short Time

Generally, students get less time for preparation. If we talk about 1st year physics, we need a lot of intensive time to prepare for it. 1st Year students of face big difficulty while preparation of Physics 11 MCQs, Short & Long questions. Good News! mhbeducator.com offers you, the easiest and smartest way to prepare 1st year physics by which students can save their time and will able to prepare Class 11 Physics very fast. Here your are provided 1st year physics chapter 9 Physical Optics MCQs, important short and long questions. For other chapters click the link below the Post. These Questions are based on the current 1st year physics syllabus according to Punjab Textbook Board.

About This Chapter

1st year physics Chapter 9 enables the students to learn 1 Wave fronts and Huygens Principle. Students learn Interference of Light Waves, Youngs Double Slit Experiment and Interference in Thin Films. Students learn Newtons Rings. Students learn Michelson's Interferometer,  Diffraction of Light, Diffraction Due to a Narrow Slit and Diffraction Grating. Students learn Diffraction of X-Rays by Crystals and Polarization.  This Post "1st year physics Chapter 9 Important Questions" covers all important mcqs, short and long questions related to important  topics of this chapter.

👉Imp MCQs - 1st year physics CH # 9

1. The angle b/w the ray of light and the wave front is:

(A) 0˚ 

(B) 60˚ 

(C) 90˚ 

(D) 180˚ 

(C) 90˚ 

2. What is the phase difference between two points on wave front?

(A) 𝜋

(B) 𝜋/2

(C) 𝜋/3

(D) 0

(D) 0

3. According to Huygens's principle , each point on a wave front acts as a source of    

(A) Primary wavelet

(B) Secondary wavelet

(C) Both

(D) None

(B) Secondary wavelet

4. Fringe spacing is increased if we use

    

(A) Red light

(B) Blue light

(C) Green light

(D) Yellow light

(A) Red light

5. The equation of Michelson interferometer is 

(A) t = m𝜆 /4

(B) L=m 𝜆/2

(C) L = m𝜆

(D) None of these

(B) L=m 𝜆/2

6. Michelson interferometer can be used to find ?

(A) Wavelength of light

(B) Velocity of light

(C) Both

(D) None

(A) Wavelength of light

7. Bending of light around the edges of an obstacle is :

(A) Refraction

(B) Polarization

(C) Diffraction

(D) None of these

(C) Diffraction

8. The wavelength of X rays is of the order of 

(A) 10m

(B) 10mm

(C) 10-10m

(D)10-3m

(C) 10-10m

9. When Newton rings are observed with reflected light, the central spot is  

(A) Blue

(B) Red

(C) Dark

(D) Bright

(C) Dark

10. The phenomenon that proves that light wave are transmitted in nature?

(A) Dispersion

(B) Polarization

(C) Diffraction

(D) Reflection

(B) Polarization

👉Next, there is  PDF containing 1st year physics chapter 9 important Short and Long Questions covers all important topics of this chapter.

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👉Other Chapters (PDF) of Physics Class 11 Punjab Textbook Board

✅Chapter 1

Measurements

✅Chapter 2

Vectors and Equilibrium

✅Chapter 3

Motion and Force

✅Chapter 4

Work and Energy

✅Chapter 5

Circular Motion

✅Chapter 6

Fluid Dynamics

✅Chapter 7

Oscillations

✅Chapter 8

Waves

✅Chapter 10

Optical Instruments

✅Chapter 11

Heat and Thermodynamics