For which of the following sets are the units fundamental?
For which of the following sets are the units fundamental? A. Area, length and volume B. Impulse, mass…
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Which of the following radiations have the longest wavelength?
Which of the following radiations have the longest wavelength? A. Gamma rays B. Infra-red C. Light waves D.…
How much heat is required to convert 50g of water at 100°C to steam at…
How much heat is required to convert 50g of water at 100°C to steam at the same temperature?…
Evaporation of a liquid produces cooling of the liquid because the
Evaporation of a liquid produces cooling of the liquid because the A. attraction between the vapour molecules and…
Calculate the amount of heat generated in an external load of resistance 8Ω if an…
Calculate the amount of heat generated in an external load of resistance 8Ω if an alternating current of…
A machine has an efficiency of 80%. If the machine is required to overcome a…
A machine has an efficiency of 80%. If the machine is required to overcome a load of 60N…
Young’s modulus of elasticity is the ratio of stress to strain, provided the load does…
Young’s modulus of elasticity is the ratio of stress to strain, provided the load does not exceed the…
Which of the following instruments can be used to measure e.m.f. most accurately.
Which of the following instruments can be used to measure e.m.f. most accurately. A. Ammeter B. Galvanometer C.…
A converging lens of focal length 5cm forms a virtual image which is 20cm from…
A converging lens of focal length 5cm forms a virtual image which is 20cm from the lens. How…
A transformer supplies 12V when connected to a 240V mains. If the transformer takes 0.120A…
A transformer supplies 12V when connected to a 240V mains. If the transformer takes 0.120A from the mains…