Question
A dishonest seller, at the time of selling and
purchasing uses weight 22% less and 30% more per kg respectively. Find the approx. percent profit earned by him.Solution
C.P of 1300 gm= Rs 1000 so CP of 780 gm= Rs 600 & SP of 780 gm = Rs 1000 % profit = `(400)/(600)` x 100 = 66.66% approx.
Which of the following is the least penetrating power rays ?
Sound and light waves both have ___________ .
Which device uses ultrasonic waves for getting images of internal organs of human body?
Who defined the law of gravitation?Â
The S.I. unit of the electric flux is
One Kilowatt hour is equal to—
The waves which are less than 20Hz are known asÂ
Which compound is used to prepare water proof clothes?
For which type of motion, the distance time graph is not a straight line and can be any kind of curve?
In the atmosphere ultraviolet rays are absorbed by –