Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 10 English Medium Physics Refraction of Light
The critical angle of glass is 42? .
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Pick out the wrong statements from the following and rewrite them after correction.
wrong statements b,c
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Find the magnification of the image formed when the object is placed at 2F of a convex lens.
(Greater than 1, 1 ,Less than 1, 0)
Magnification=1 (one)
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A person use a spectacle of power of lens -1.25 D.
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Analyse the ray diagram. OB indicates an object placed in front of the convex lens.
imAGE
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The diagram below is of an object OB placed in front of a lens
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Complete the diagram and label the principal focus of the concave lens.
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An image with twice the size of the object is produced on a screen using a convex lens of focal length 15cm.
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Statements related to the images formed by lenses are given below. Tabulate them into those related to real images and those related to virtual images.
Real images- a,c,d,f
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The image of a lit candle is produced on a screen using convex lens. Find the position of the object in each of the following conditions.
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The terms given are related to lens. Using these fill up the following statements.
(Focal length, Pricipal axis, Optic centre, Centre of curvature, Radius of curvature.)
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The light lays falling parallel to the principal axis of a convex lens is shown in the diagram. Complete the diagram & label the principal focus of the lens.
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Light ray entering glass from air at an angle is shown in the diagram. Which among the following is the correct one.
i ii iii
Figure iii, It bents towards the normal
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The diagrams show light ray entering glass slab from air
Analyse these diagrams and answer the following questions.
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Observe the figure. XY is the surface of separation of the media A and B. Light ray enters B from A
..
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Find the relation and complete the word pair Focal length : metre Power of lens : ............
Power of lens : Dioptre
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Find the power of a convex lens with focal length 10cm
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Object AB is placed in front of a concave lens
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An object is placed 20 cm from the convex lens, virtual and erect images formed 100 cm from the lens.
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The diagram shows the image formation by a convex lens.
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The diagram shows the image formation by a convex lens.
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Express the following measurements in New Cartesian Sign Convention. IM is the image of object OB.
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Method of measuring distances according to New Cartesian Sign Convention is given below. Choose the correct statements from these.
b. All distances measured along the direction of incident light is positive.
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Observe the figure carefully and an object ‘OB’ is placed in front of the concave lens
.
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An object is placed in front of the lens is given below.
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Observe the figure given below
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Obseve the table and answer the questions given below
.
c. Find out the speed of light in medium B?(speed of light in vaccum = 3x108m/s )
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