Prelims

For reproducing sound, a CD (Compact Disc) audio player uses a

The memory of a computer is commonly expressed in terms of Kilobytes or Megabytes. A byte is made up of

Consider the following features of newer models of motor cars : I. Radial tyres II. Streamlined body III. Multipoint fuel injection IV. Catalytic converter with exhaust Which of these features make the newer models of motor cars more fuel efficient ?

Fluorescent tubes are fitted with a choke. The choke coil

A noise level of 100 decibels would correspond to

A ‘black hole’ is a body in space which does not allow any radiation to come out. This property is due to its

Which one of the following does a TV remote control unit use to operate a TV set ?

In an open economy, the national income (Y) of the economy is : (C, I, G, X, M stand for Consumption, Investment, Govt. Expenditure, total exports and total imports respectively.)

Assertion (A) : The origin of feudal system in ancient India can be traced to military campaigns. Reason (R) : There was considerable expansion of the feudal system during the Gupta period.

Assertion (A) : The basic weakness of the early nationalist movement lay in its narrow social base. Reason (R) : It fought for the narrow interests of the social groups which joined it.