Question
A shopkeeper bought an article and marked it at Rs. 250.
By selling the article at a discount of 4%, he earns a profit of 20%. Find the cost price of the article.Solution
Marked price of the article = Rs. 250 Selling price of the article = 0.96 × 250 = Rs. 240 So, cost price of the article = 240/1.2 = Rs. 200
A body is thrown vertically upward. The work done by gravity is:Â
Which phenomenon does a hologram use to create an image?
A car increases its speed from 20 m/s to 60 m/s in 8 seconds. Find its acceleration. Â
Which of the following rays are not deflected by a magnetic field?
When a cannonball is fired, its motion is an example of which type of motion?
Which lens is used to correct myopia (shortsightedness)? Â
Hyperrnetropia or longsight can be corrected by using :
The Lyman series in hydrogen atom spectrum lies in:
Which device measures temperature?
Which of the following statement is INCORRECT regarding the comparison between biot-savart law for the magnetic field and coulomb's law for the electro...