Physics Test 20...

The ratio of the energy of an X - ray photon of wavelength 1 Å to that of visible light of wave length 500 Å is

The de-Broglie wavelength associated with proton changes by 0.25% if its momentum is changed by P₀. The initial momentum was

A fixed volume of iron is drawn into a wire of length l. The extension x produced in this wire by a constant force F is proportional to

Condensers of capacities 2 μ F and 3 μ F are connected in series and a condenser of capacity 1 μ F is connected in parallel with them. The resultant capacity is

Vapour is injected at a uniform rate in a closed vessel which was initially evacuated. The pressure in the vessel

What is the coefficient of mutual inductance, when the magnetic flux changes by 2X10^-2 Wb and change in current is 0.01 A ?

The electric potential V is given as a function of distance x (metre) by V = (5x² + 10x - 9) volt. Value of electric field at x = 1m is

If 3.8 x 10^-6 is added to 4.2 x 10^-5 giving due regard to significant figures, then the result will be

The mass and diameter of a planet have twice the value of the corresponding parameters of earth. Acceleration due to gravity on the surface of the planet is

Referring to the above two questions, the acceleration due to gravity is given by