Normal Size Small Size show me how
|1.the element of electric heater is made of
|2.when the water is heated from 0 c to 100 c ,the volume of water
|first decrease and then increase
|3.one mega watt houris equal to
|3.6 *10^9 joule
|4.at what temperature is the temp on celuius and fahrenheit scales equals
|5.the peroid of revolution round the sun is maximum by which among the following planets
|6.einstein got the nobel price for
|7.galvanometer is converted into voltmeter using
|high resistance in series
|8.gas laws was given by
|9.kilowatt hour is unit of
|10.ozone layer is protects from us from
|11.fire in the diesel engine is produces by which of the following
|12.which of these best conducter of the electricity
|13). Which among the following order of decreasing wavelengths of electromagnetic waves is correct?
|I) Radio waves II) Infrared rays III) Visible Light IV) X-Rays
|14). Ampere-hour is the unit of which among the following?
|Amount of charge
|15). Who discovered X-Rays?
|16) Which among the following are primary colors?
|Red, Green, Blue
|17) At what temperature will the density of water be maximum?
|4 deg Celusis
|18) Persistence of vision is the principle behind?
|19) Which metal is commonly used for making an electromagnet?
|20) Light from the laser is________.
|21) Choke is used to_______.
|a) Reduce the current in AC circuit
|22) In a standing wave the distance between a node and adjacent anti node is______.
|λ / 4
|23) A telescope and microscope differ in that______
|Telescope has objective of large focal length and eyepiece of smaller focal lengths
|24) The weight of a body is______.
|Maximum at the poles
|25) At what temperature a body will not radiate any heatenergy?
|26) Electromagnetic spectrum consists of the following radiations -I. X-rays II. Gamma rays III. Ultraviolet radiations IV. Infrared radiations Choose the correct order of code in the increasing order of their frequency:
|IR,UV,X RAYS ,GAMMA