Tap water a good conductor of electricity since it contains some impurities, i.e. small amounts of sodium, calcium and magnesium salts dissolved.... View Article
The value of solar constant is approximately 1.366 kilowatts per square meter (kW/m2) at solam minimum and approximately 0.1% greater, i.e.... View Article
The seven colours of the spectrum of white light is denoted by the term VIBGYOR.Here,V - VioletI - IndigoB - BlueG - GreenY - YellowO - OrangeR -... View Article
Higher the latitude, lower the temperature. The sun’s rays hit at a flatter angle at higher latitudes, so the solar energy is spread over a... View Article
The centre of mass of a triangular lamina is at the intersection of the medians. Thus, it is the centroid of the triangle. The below figure shows... View Article
Let y be the reciprocal of -5.As we know, the product of a number and its reciprocal is equal to 1.So, (-5) × y = 1y = -1/5Therefore, the... View Article
(a) 16 (b) 18 (c) 0 (d) 17Correct option: (a) 16The predecessor of any number can be obtained by subtracting 1 from it.The predecessor of 17 = 17... View Article
The prime factorisation of 2304 is:2304 = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3To find the square root, we need to group the pairs of equal... View Article
LHS = (tan A + sin A)/(tan A - sin A) = [(sin A/cos A) + sin A]/ [(sin A/cos A) - sin A] = [sin A({1/cos A} + 1)]/ [sin A({1/cos A} - 1)] =... View Article
d/dx (sin2x) = d/dx (sin x. sin x)Using the product rule of differentiation,= sin x d/dx(sin x) + [d/dx (sin x)] sin x= sin x cos x + cos x sin... View Article
