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Table of 59

The table of 59 is the multiplication table which is obtained as the result of multiplying the number 59 with the natural numbers. In Maths, the... View Article

Table of 1

Table of 1 is given here to help those kids who are just beginning to learn about times tables. We have provided the multiplication tables of 1... View Article

Photoelectric effect supports quantum nature of light because: (a) There is a minimum frequency of light below which no photoelectrons are emitted. (b) The maximum kinetic energy of the photoelectrons depends only on the frequency of the light and not on its intensity. (c) Even when the metal surface is faintly illuminated, the photoelectrons leave the surface immediately. (d) Electric charge of the photoelectrons is quantized.

The correct answer is(a) There is a minimum frequency of light below which no photoelectrons are emitted.(b) The maximum kinetic energy... View Article

Two towns A and B are connected by regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 km h–1 in the direction A to B notices that a bus goes past him every 18 min in the direction of his motion, and every 6 min in the opposite direction. What is the period T of the bus service and with what speed (assumed constant) do the buses ply on the road?

Solution Given that Speed of the cyclist = 20 km/h A bus goes past him every 18 min in the direction of cyclist motion and 6 min in... View Article

If two liquids A and B form minimum boiling azeotrope at some specific composition then: (A) A-B interactions are stronger than those between A-A or B-B. (B) vapour pressure of solution increases because more molecules of liquids A and B can escape from the solution. (C) vapour pressure of solution decreases because less number of molecules of liquids A and B can escape from the solution. (D) show a large positive deviation from Raoult’s law.

The corrct answer is (D) show a large positive deviation from Raoult's law. Raoult's law Raoult’s law states that a... View Article

Two particles are oscillating along two close parallel straight lines side by side, with the same frequency and amplitudes. They pass each other, moving in opposite direction when their displacement is half of the amplitude. The mean positions of the two particles lie on a straight line perpendicular to the paths of the two particles. The phase difference is:

 The phase difference is = 2∏/3 radians Let us represent the particles by equation y1 and y2 respectively. y1 = A sin ωt... View Article