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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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1586
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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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8129
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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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2004
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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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3394
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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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9843
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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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3928
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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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13478
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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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9094
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October 22, 2016
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Complete the ray diagram
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1
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2715
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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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3512
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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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4654
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October 22, 2016
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If Yes/Not, why?
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1
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778
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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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4963
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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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1271
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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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1434
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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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1471
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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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3026
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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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3359
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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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907
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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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3037
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October 22, 2016
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What do you see
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1
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850
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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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2861
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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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1436
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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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670
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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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3111
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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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1708
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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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960
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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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1105
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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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3412
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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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2196
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October 22, 2016
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