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An object 4 cm in height, is placed at 15 cm in front of concave mirror of focal length 10 cm
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1
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1354
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April 3, 2019
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A 2.0 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm
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1
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7954
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October 22, 2016
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An object 5 cm in length
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1
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1786
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October 22, 2016
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A concave lens of focal length 15 cm forms an image 10 cm from the lens
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1
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3256
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October 22, 2016
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An object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm
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1
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9566
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October 22, 2016
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A convex lens has a focal length of 25 cm
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1
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3714
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October 22, 2016
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A 5 cm tall object is placed perpendicular to the principal axis
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1
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13070
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October 22, 2016
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An object 3.0 cm high is placed perpendicular to the principal axis
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1
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8094
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October 22, 2016
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Complete the ray diagram
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1
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2160
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October 22, 2016
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Draw a ray diagram to locate the position
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1
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2603
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October 22, 2016
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What do you conclude from this activity ? explain
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0
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4480
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October 22, 2016
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If Yes/Not, why?
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1
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625
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October 22, 2016
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What do you mean by ah object at infinity ? What type of rays fall on the lens?
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0
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3993
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October 22, 2016
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What difference do you notice in refracted rays between the following figures?
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1
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1078
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October 22, 2016
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What happens to ray that moves along the principal axis or moves through the centre of curvature?
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0
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1240
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October 22, 2016
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Why do you see a diminished image of the arrow?
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0
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1184
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October 22, 2016
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Write an activity to know the characteristics of image due to convex lens at various distances
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0
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2448
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October 22, 2016
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Explain ‘Refraction of light at a curved surface’ through an activity
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0
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2764
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October 22, 2016
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Give the sign conventions for lenses with regard to the object and image distance
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0
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765
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October 22, 2016
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What happens to be image formed by a convex lens if its lower part is blackened?
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0
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2888
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October 22, 2016
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What do you see
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1
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703
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October 22, 2016
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Sudha finds out that the sharp image
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1
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2328
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October 22, 2016
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A convex lens of the focal length 20 cm can produce a magnified virtual as well as real image
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1
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1287
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October 22, 2016
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Give conventions used in lenses
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0
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568
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October 22, 2016
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State the type of lens used as a magnifying glass
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1
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2830
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October 22, 2016
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A concave mirror and a convex lens are held in water
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1
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1521
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October 22, 2016
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How will you decide whether a given piece of glass is a convex lens, concave lens or a plane plate?
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0
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819
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October 22, 2016
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The ray diagram given below illustrates
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1
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956
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October 22, 2016
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You are given a convex lens of the focal length 10 cm
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1
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2997
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October 22, 2016
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Write characteristics of image formed by a concave lens at various distances
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0
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1743
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October 22, 2016
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