Questions

The focal length of a concave mirror with a radius of curvature of 20.0 cm is :

Who created the first mechanical computer, which proved to be the prototype for future computers?

Humayun's Tomb was built by_____.

What is the importance of Minamoto Yoritumo in Japanese history?

Who wrote 'Akbarnama'?

Determine the value of ? $$\begin{gathered} 1-121-131-14.........1-1n-? \\ \end{gathered}$$

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of thefour alternatives.

When the kerosene burned, the fuel in the tank below would be __________ pressure, and __________ a small circular flame would appear in the burner. The valve had tobe opened to let more kerosene vapour to the burner and pumping resumed. With the increase in pressure, the burner flame would spread _________ a loud noise. Tolower the flame, the valve had to be _________ opened to reduce the pressure and then tightened until the desired flame size was achieved. _________ you wanted theflame to be bigger, you had to hit the piston again. Pump stoves are still in vogue.

below would be __________ pressure

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.

The travel agent is making all the reservations.