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Question: If a needle is carefully placed on the surface of water, it floats due to:Options: Cohesio..
Question: If a concave mirror has a radius of curvature of 20 cm, what is its focal length?Options: ..
Question: A light ray strikes a glass surface at an angle of 60 degrees. If the refractive index of ..
Question: What is the focal length of a lens that forms a virtual image at a distance of 20 cm when ..
Question: A ray of light passes from air into glass at an angle of incidence of 45 degrees. If the r..
Question: If the focal length of a concave lens is -10 cm, what is the nature of the image formed wh..
Question: In which scenario is light most likely to be polarized?Options: When it passes through a p..
Question: Which type of light is typically not polarized?Options: Natural lightLaser lightReflected ..
Question: What happens to the light intensity when it passes through two polarizers aligned at an an..
Question: Which of the following describes the polarization of light?Options: Light waves oscillate ..
Question: What is the Brewster\'s angle for light entering a medium with a refractive index of 1.5?O..
Question: A lens has a focal length of 50 cm. If an object is placed at 100 cm, what type of image i..
Question: What is the magnification produced by a lens if the object distance is 15 cm and the image..
Question: A concave lens has a focal length of 25 cm. What is the image distance when the object is ..
Question: An object is placed 40 cm from a convex lens with a focal length of 10 cm. Where is the im..
Question: If a lens has a power of -2 D, what type of lens is it?Options: Convex lensConcave lensBif..
Question: A biconvex lens has radii of curvature 20 cm and 30 cm. What is the focal length of the le..
Question: A lens forms a real image that is twice the size of the object. If the object is placed 10..
Question: If two sound waves of the same frequency interfere constructively, what happens to the res..
Question: What is the threshold of hearing in terms of sound intensity level?Options: 0 dB10 dB20 dB..
Question: In simple harmonic motion, the total mechanical energy is conserved. What forms of energy ..
Question: What is the relationship between the period of a simple harmonic oscillator and its mass a..
Question: A particle in simple harmonic motion has a maximum speed of 4 m/s and an amplitude of 2 m...
Question: In a simple harmonic motion, the restoring force is directly proportional to what?Options:..
Question: If the amplitude of a simple harmonic oscillator is halved, how does the total energy chan..
Question: In thin film interference, if the refractive index of the film is greater than that of the..
Question: In a two-slit interference pattern, if the intensity at the center is I_0, what is the int..
Question: If the wavelength of light used in a double-slit experiment is 600 nm and the distance bet..
Question: In a thin film interference, if the film is of thickness t and the wavelength of light is ..
Question: What is the maximum intensity ratio in interference of two waves of equal amplitude?Option..
