A body of mass m is placed on earth surface which is taken from earth surface to a height of h = 3R then change in gravitational potential energy is :
A point P consider at contact point of a wheel on ground which rolls on ground without slipping then value of displacement of point P when wheel completes half of rotation (If radius of wheel is 1m) :
A block of mass 10 kg placed on the rough horizontal surface having a coefficient of friction µ = 0.5, if a horizontal force of 100 N acting on it then the acceleration of the block will be :
In a PN junction :
The given truth table is for which logic gate :
The magnetic field of a given length of wire for a single turn coil at its center is 'B' its value for a turn coil for the same wire is :
The velocity of the electromagnetic waves is parallel to :
A deuteron is bombarded on 8O16 nucleus then the α-particle is emitted then the product nucleus is
Which of the following order is wrong :
For a black body at temperature \(727^{\circ}C\), its radiating power is 60 watt and temperature of surrounding is \(227^{\circ}C\). If temperature of black body is changed to \(1227^{\circ}C\) then its radiating power will be: