Question
Which of the following statements is true when we see
'rainbow'?Solution
We see rainbows because of the geometry of raindrops. When the sun shines from behind us into the rain, incident rays of light enter the drop and are refracted inwards. They are reflected from the back surface of the raindrop, and refracted again as they exit the raindropandreturntooureyes.Arainbowisan optical and meteorological phenomenon that is causedbyreflectionoflightinwaterdropletsin the Earth's atmosphere, resulting in a spectrum of light appearing in the sky.
If (9x + 4y) = 808 and 2x:5y = 18:25, then find the value of (2x² + 3y²).
If x = √7 + √6 and y = √7 - √6 , then the value of is (x2 + y2)/(x3 + y3).
...Before servicing, a car runs at a speed of 25 km/hr while after servicing, it runs at a speed of 50 km/h. After servicing the car covers a certain dista...
If a + b = 56 and (a – b)² = 496, find the value of the product of a and b.
(123×123×123 + 130×130×130)/(123×123 - 123×130 + 130×130) = ?Â
If for non-zero x, x² - 4x - 1 = 0, what is the value of x² + 1/x²?
If (a2 + 1/a2) = 11, then find the value of (a3 - 1/a3).
You are provided with three sequences below. Determine the values of P, Q, and R, and then identify the relationship among them.<...
If x = (2+√3)/(2-√3), y = (2-√3)/(2+√3). Then find out the value of (x²+y²-xy)/(x²+y²+xy)?
If (5x - 2y) = 170 and 4x:3y = 32:9, then find the value of (3x² + y²).
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