Exams

Which of the following devices helps to maintain a potential difference across a conductor?

Rajesh walks 2 km to south, then turns north­east, and walks 3 km. Then he turns south and walks 2 kms. Then he turns west and walks 4 kms. Finally, he turns north­west and walks 5 kms. In which direction is he from his starting point?

If the sum of three consecutive numbers is 15, what is the square of the middle number ?

In the following, rectangle represents Physicians, circle represents Floral designers, triangle represents Sculptors and square represents Americans. Which set of letters represents Americans who are either Floral designers or Sculptors?

__________ says that if we keep increasing the employment of an input, with other inputs fixed, eventually a point will be reached after which the resulting addition to output (i.e., marginal product of that input) will start falling.

A circle has its centre at O . A tangent drawn from a point P , which is situated outside the circle, touches the circle at A. If PA = 4 cm & PO=5 cm, then the length of the radius of the circle is

The graph shows the monthly expenditure of a company (unit = 10 lakhs). Study the graph and answer the questions.

The ratio between transport and employee salary on monthly basis is

The angles of elevation of the top of a tower 72 metre high from the top and bottom of a building are 30° and 60° respectively. What is the height (in metres) of building?