The increasing order of the refractive index of certain materials is (left to right) ________ Ice, Kerosene, Benzene, Rock Salt Rock Salt, Ice, Benzene, Kerosene Kerosene, Ice, Benzene, Rock Salt Rocksalt, Benzene, Kerosene, Ice TRUE ANSWER : ? YOUR ANSWER : ?
Choose the most appropriate answer: In which atmospheric layer are the communication satellites located? Ionosphere Troposphere Mesosphere Stratosphere TRUE ANSWER : ? YOUR ANSWER : ?
Which alternative energy source is exhaustible? Geothermal energy Wind energy Tidal energy Solar energy TRUE ANSWER : ? YOUR ANSWER : ?
Remote-sensing device has an inbuilt source of G-ray X-ray Ultraviolet ray Infrared ray TRUE ANSWER : ? YOUR ANSWER : ?
The component used for tuning a radio is basically a variable Condenser Inductor Resisto Transformer TRUE ANSWER : ? YOUR ANSWER : ?
When a pail of water is swung in a vertical circle, the water does not fall out at the top of the loop when the speed is Above a certain minimum value depending on amount of water in the pail Above a certain minimum value irrespective of amount of water in the pail Below a certain minimum value irrespective of amount of water in the pail Below a certain minimum value depending on amount of water in the pail TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is used to split white light into different colours ? Concave lens Prism Convex lens Glass slab TRUE ANSWER : ? YOUR ANSWER : ?
Tungsten is used for the manufacture of the filament of an electric bulb, because It is a good conductor It is economical It has a very high melting point It is malleable TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is a non renewable source of energy ? Biogas Coal Wind Solar TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following characteristics of light remains unchanged when light travels from vaccum enters water Frequency Wavelength Speed Amplitude TRUE ANSWER : ? YOUR ANSWER : ?