Explain the difference between a lens and a mirror?
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What type(amount) of capacitors are used in fan?
Does gas have density?
What is the use of rectifiers? Point out them one by one.
Two bulbs, one of 600W and the other of 100W having same voltage rating are connected in series across the supply in a room.Which bulb will glow brighter? If one of the bulb is switched off, what will be effect on illumination?
What seven colors appear to be white when mixed together?
What is ntu in thermodynamics?
When the sound intensity is above 120 decibel, what happen to human ears?
Why is water in kept in ?gharas? in summer ?
If a number of planes are talking off form an aircraft carrier, what is the minimum interval required between the take-off of the successive planes ?
How many femtometers are in a nanometer?
the time period of three pendulums are given in a sequence as a= 1.27s b=0.85s c=0.99s the given sequence may not be correct arrange the time period in a correct sequence
Explain the Opaque ?