Punjab 11th Class Physics Chapter 9 Physical Optics Mcqs Test Online Physics Chapter 9 Physical Optics Mcqs Test Online Punjab Class 11th 123456789101112Show paginator Hide paginator 8% Question 1 of 12Physics 1. Coloured fringes observed in soap bubbles are the examples of Reflection Diffraction Polarization Interference Question 1 of 12Question 2 of 12 2. Which one of the following properties of light does not change when it enters from one medium to another medium? Velocity Amplitude Frequency Wavelength Question 2 of 12Question 3 of 12 3. The principle of Michelson interferometer is based on the division of Wave front Amplitude Frequency Speed of light Question 3 of 12Question 4 of 12 4. Which one of the following properties proves the transverse wave nature of light. Interference Diffraction Refraction Polarization Question 4 of 12Question 5 of 12 5. The tip of a needle does not give a sharp image. It is due to Polarization Refraction Interference Diffraction Question 5 of 12Question 6 of 12 6. Light of wavelength λ is incident normally on a diffraction grating for the slit spacing is equal to 3λ. What is the sin θ of the angle between the second order maximum and the normal: 1 1/6 2/3 1/3 Question 6 of 12Question 7 of 12 7. During a sunny day we see the objects in a class room even when all the electric lights are off, due to: Refraction of light Reflection of light Interference of light Diffraction of light d Question 7 of 12Question 8 of 12 8. Signal from a remote control to the device operated by it travels with the speed of: Ultrasonic Light Sound Supersonics Question 8 of 12Question 9 of 12 9. In the Young’s double slit experiment the separation between the slits is halved and the distance between the slits and the screen is double. The fringe width is Doubled Halved Unchanged Quadrupled Question 9 of 12Question 10 of 12 10. Which of the following three regions of the electromagnetic spectrum in order of increasing wavelength, visible radiation. Gamma rays, microwave, visible radiation Ultraviolet, infra-red microwaves Radio waves, ultraviolet, X-rays Visible radiation, gamma rays, radio waves Question 10 of 12Question 11 of 12 11. The principle of Young’s double slits experiment is based on the division of: Velocity Wavelength Frequency Amplitude Question 11 of 12Question 12 of 12 12. Two monochromatic radiating X and Y are incident normally on a diffraction grating. The second order intensity maximum for X coincides with the third order intensity maximum for Y. What is the ratio wavelength X/wavelength Y ? 3/2 2/12/3 ½ Question 12 of 12 Loading... Test By Subject Punjab Test By Topics 11th Class Physics You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.