Practice mode / Everyday Science Why does the ocean look blue? A Option A: Because the sunlight falling on it is reflected B Option B: Because the sunlight falling on it is scattered C Option C: Because the sunlight falling on it is refracted D Option D: Because the sunlight falling on it is absorbed Correct answer B. Because the sunlight falling on it is scattered Explanation Water scatters and reflects blue light back to the viewer while longer red wavelengths are taken up as light penetrates the water, so the sea appears blue. Show answer Report a problem Answer checked 11 October 2026 · How we write and check questions
Question 01 / Everyday Science What is the distance between the optical centre of a convex lens and its principal focus called? A Option A: Radius of curvature B Option B: Power C Option C: Magnification D Option D: Focal length Correct answer D. Focal length Show answer Open question
Question 02 / Everyday Science The angular distance of a place north or south of the equator is called what? A Option A: Latitude B Option B: Altitude C Option C: Longitude D Option D: Meridian Correct answer A. Latitude Show answer Open question
Question 03 / Everyday Science What does a convex mirror always do? A Option A: Produces a larger image B Option B: Forms a virtual image C Option C: Forms a real image D Option D: Forms an inverted image Correct answer B. Forms a virtual image Show answer Open question
Question 04 / Everyday Science Which type of lens do doctors prescribe for a patient with astigmatism? A Option A: Convex Lens B Option B: Cylindrical Lens C Option C: Spherical Lens D Option D: Concave Lens Correct answer B. Cylindrical Lens Show answer Open question
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