11 questions found
Assume 'A' does 500 J of work in 'x' minutes and 'B' does 1000 J of work in 20 minutes. If the power delivered by 'A' is P1 and 'B' is P2 and P1 = 2P2, then 'x', in minutes, is :
The rule to determine the direction of a current induced in a coil due to its rotation in a magnetic field is :
Van de Graaff generator generates :
A car travels a total distance L. It travels half the distance with speed and the other half with speed . The average speed of the car is :
The linear momentum of a particle is conserved if :
When a stone tied to a string is whirled in a circle, the work done on it by the string :
A sound wave travelling at a speed of 330 m/s produces 20 crests and 20 troughs in 0.1 second. The wavelength of the sound wave is :
An X-ray can be deflected :
In a simple astronomical telescope, the objective and the eyepiece used respectively, are :
Twinkling of a star is due to :
Which one of the following is not a property of 'graphene' ?
