[" 3.A concave mirror of focal length "1...

[" 3.A concave mirror of focal length "100" on is used to "],[" obtain the image of the sun which subtends an "],[" angle of "30^(@)" .The diameter of the image of the sun "],[" will be "],[[" (a) "1,74cm," (b) "0.87em],[" (c) "0.435cm," (d) "100cm]]

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[" 3.A concave mirror of focal length "100" on is used to "],[" obtain the image of the sun which subtends an "],[" angle of "30^(@)" .The diameter of the image of the sun "],[" will be "],[[" (a) "1,74cm," (b) "0.87em],[" (c) "0.435cm," (d) "100cm]]

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