3 invertible

Question: An object is placed before a concave lens. The image formed _____________-. 1. is always erect 2. may be erect or inverted 3. is always inverted 4. is always real Answer: ..

Question: An image formed by a convex mirror is always ________. 1. virtual, erect and diminished 2. virtual, real and magnified 3. real, inverted and diminished 4. real, erect and magnified Answer: ..

Question: Where should an object be placed so that a real and inverted image of the same size is obtained, using a convex lens? 1. Between O and F 2. At F 3. At 2 F 4. At infinity Answer: 3..

Position of object Position of image Nature of image Object at infinity Image at focus Real, inverted, small in size Object beyond 2F Image formed between F and 2F Real, inverted, smaller in size Object at 2F Image is also at 2F Real, h..

Erect and virtual Magnified Magnifying lens (simple microscope), eye piece of many instruments At 2F 1 At 2F 2 Inverted and real Same size Photocopying camera Between F and 2F 1 Beyond 2F 2 Inverted and real Magnified Photographic camera, terrestrial teles..

Construction and Working of an Electrochemical Cell - A zinc rod is dipped in ZnSO 4 solution and a Cu rod in CuSO 4 solution. The Zn rod is externally connected to the copper rod through a rheostat, a galvanometer and a plug key. fig 5.10 The two aqueous solutions are interlinked through a salt br..

Property Eye Camera Type of lens Convex lens Convex lens Nature of the image Real, inverted and diminished Real, inverted and diminished Light control mechanism The pupil contracts and dilates according to the intensity of light Adjustments of..

Highly electropositive metals like potassium, calcium and sodium combine with cold water, even ice-cold water to give their respective hydroxides and hydrogen. If a small piece of sodium is placed on cold water, it floats on water. It then melts to form a silvery ball, and darts about libera..

Hydrogen peroxide is taken in a round-bottomed flask and heated carefully. The oxygen evolved is collected by the downward displacement of water (Fig.13.3..

The electrochemical cell based on this reaction is set up as follows. Zinc sulphate solution is taken in a beaker and a zinc rod is dipped in to it. Similarly copper sulphate solution is taken in another beaker and a copper strip is dipped in to it. An inverted U tube containing concentra..