Question
How much percent of the curved surface area of a sphere will be increased if the radius is doubled?
How much percent of the curved surface area of a sphere will be increased if the radius is doubled?
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Question
If sin (A + B) = 1 and cos (A – B) = 1, then find the value of cot 2A, where 0° ≤ (A + B) ≤ 90° and A ≥ B
If sin (A + B) = 1 and cos (A − B) = 1, then find the value of cot 2A, where…
Question
If r cosθ = 2√3 and r sinθ = 2, then find the value of r and θ when 0° < θ < 90°.
If r cosθ = 2√3 and r sinθ = 2, then find the value of r and θ when 0° < θ…
Question
In △ABC, ∠ABC = 90°, AB = 6 cm, BC = 8 cm. Find the circum-radius of triangle ABC.
In △ABC, ∠ABC = 90°, AB = 6 cm, BC = 8 cm. Find the circum-radius of triangle ABC.
Question
In trapezium ABCD, BC ∥ AD and AD = 4 cm. Diagonals AC and BD meet at O such that AO/OC = DO/OB = 1/2. Find the length of BC.
In trapezium ABCD, BC ∥ AD and AD = 4 cm. Diagonals AC and BD meet at O such that AO/OC =…
Question
BOC is a diameter of a circle whose centre is O. ABCD is a cyclic quadrilateral. If ∠ADC =110°, find ∠ACB
BOC is a diameter of a circle whose centre is O. ABCD is a cyclic quadrilateral. If ∠ADC =110°, find ∠ACB
Question
If (3x − 2y) : (3x + 2y) = 4 : 5 then what is (x + y) : (x − y)?
If (3x − 2y) : (3x + 2y) = 4 : 5 then what is (x + y) : (x − y)?
Question
If the roots of the equation x² − 22x + 105 = 0 are α and β, then find the value of 1/α + 1/β
If the roots of the equation x² − 22x + 105 = 0 are α and β, then find the value of…
Question
In a partnership business, ratio of capitals of Ila, Rahima and Bela is 3 : 8 : 5. If profit of Ila is Rs. 600 less than profit of Bela, find the total profit in the business.
In a partnership business, ratio of capitals of Ila, Rahima and Bela is 3 : 8 : 5. If profit of Ila…
Flash Note
Chapter 12 – Radioactivity | Class 10 Physics Flash Notes
Chapter : Radioactivity Board : ICSE Class : X (10) Subject : Physics