Physics MCQs for Class 12 with Answers Chapter 9 Ray Optics and Optical Instruments – Learn CramPhysics Top Multiple Choice Questions Optical fibres are based on the phenomenon of a interference b dispersion c diffraction d total internal reflection Answer d total internal reflection The phenomenon of light associated with the appearance of blue colour of the sky is a interference b reflection c refraction d scattering Answer d scattering Lens in made up of a pyrex glass b flint glass c ordinary glass d cobalt glass Answer b flint glass Lambert's law is related to a reflection b refraction c interference d illumination Answer d illumination A water tank appears shallower when it is viewed from top due to a rectilinear propagation of light b reflection c total internal reflection d refraction Answer d refraction To draw maximum current from a combination of cells, how should the cells be grouped? We will create web pages of your files on the behalf of you. Your support will make this library huge and more helpful to other readers. You must log in to upload your files. Aspire Study. Upload Log in Sign Up. Mobile No.
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Physics Top 100 Multiple Choice Questions
Randomly polarized light moving along the x axis in the positive x -direction is incident on an atomic oscillator at the origin. The same current is passed through another wire of half the resistance. II only. Learn image location by spherical formula of mirror, reflection of light test prep for online certificat.
Question 10 Question: The acceleration in a body is due to 1. Light with an electric field oscillating in the y questioons. The path a light ray takes maximizes its time of travel between any two points. A short pulse of white light is incident from air to a glass slab at normal incidence.
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How far is the image from the person? What is the distance between the object and its image? Virtual 2. Real 3. Diverging 4. Converging Answer: 2 Question 21 Question: A ray of light is incident on a plane mirror and the angle of incidence is 25o. What is the angle of reflection?
Light behaves in accordance with Fermat's principle because: This is the only way in which energy can be conserved. Which of the following is not a consequence of interference effects. When a ray of light enters from one medium to another, then which of the following does not change. Maxwell 4.
Answer: Explaination: The image chocie an object formed by a lens pptics be brought to a sharp focus on a unfixed screen by changing the focal length of the lens by any of the following methods: i By placing another lens of suitable focal length in contact with the previous lens. Newton's second law of motion 2. The image can only be projected onto a screen? Does it act as a converging lens or a diverging lens.Ans:2 Each of 3 capacitors of capacity C are connected together in series. Decrease the separation between the fringes, but increase their width. If the sun is million km away from the earth, how long does it take sunlight to reach the earth. The path multilpe by a light ray always minimizes the time between any two points.
If the sun is million km away from the earth, how long does it take sunlight to reach the earth. Answer: 4 Question 22 Question: What is the mass of an object whose weight on earth is N. In order to propagate with speed clight must take the shortest route through spacetime. Raisa Annisa Bella.