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What is the range from the Earth' s surface , where an artificial satellite to detect a precise latitude and longitude of a place, should revolve ?
Detection of changes in their living place by organisms is called ______
An object is placed at a distance of 20.0 cm from a concave mirror of focal length 15.0 cm. (a) What distance from the mirror a screen should be placed to get a sharp image? (b) What is the nature of the image?
True or False,If False give the correct answer. Habitat is a living or dwelling place of an organism.
A concave mirror gives an images three times as large as the object placed at a distance of 20 cm from it. For the images to be real, the length should be
When viewing through a compound microscope, our eyes should be positioned not on the eyepiece, but a short distance away from it for best viewing . why ? How much should be that short distance between the eye and eyepiece?
List out few examples in irreversible reactions (changes) taking place in our daily life activity.
To obtain an image of the same size as the object with the help of a convex lens, the object should be placed ……………………
A convex lens produces a double size real image when an object is placed at a distance of 18 cm from it. Where should the object be placed to produce a triple size real image ?
Why are viruses known as the intermediate between living and non-living entities?
NCERT TAMIL-HEALTH AND HYGIENE-Evaluation (Higher order thinking question.)
