Question
Six years from now, Kirti's age will be twice that of
her brother Kunal, but 4 years ago she was three times as old as Kunal was then. Find the present age of Kunal.Solution
Let the present age of Kirti =x and Kunal =y ATQ- After 6 years- X+6 = 2(y+6)          … (1) Before 3 years – x-4 = 3(y-4) x-4 =3y-12 x =3y-8        …. (2) put the value of x in Eq (1) 3y -8+6 =2y+12 3y -2 =2y+12 y =14 years.
Which color of light experiences the most bending when it passes through a prism and separates from white light?
The hair of shaving brush clings together when removed from water due to –
What is the SI unit for measuring electric current?
How much time does a Geostationary satellite take to complete one orbit, at the height of 35790 km?
The energy possessed by a body due to its position or shape is known as:
Vivek was walking in the park. On the way he found a stone lying. He picked the stone and threw it up in the sky. After few seconds, he observed that th...
The time period of a second’s pendulum is –
What does friction cause to the screws, ball bearings and soles of the shoes?
How does an earphone convert electrical signals into sound?
Which of the following statements best describes the relationship between static friction and the normal force?
