Which of the following is NOT a source of viruses?
The correct answer is D
In a refrigerator, the cooling system should always be –
The ratio of the amplitudes of the electric field and magnetic field strengths has the same dimensions as that of:
Ultrasonic pulse echo technique, a non-destructive ultrasonic testing, is employed for any possible flaw detection in a metallic bar of thickness 30 cm...
Water flows in a horizontal pipe of non-uniform area of cross-section at a pressure difference of 1.6 cm of mercury. If the velocity of water at the la...
A copper block of mass 3 kg is heated in a furnace to a temperature of 450°C and then placed on a large ice block. Find the maximum amount of ice that...
The electric and magnetic fields of an electromagnetic wave are _____________
The storage battery of a car has an emf of 15 V. If the internal resistance of the battery is 0.5 Ω, what is the maximum current that can be drawn from...
Which of the following is the energy quantum of radiation?
An electric dipole of length 10 cm, when placed with its axis making an angle of 30° with a uniform electric field, experiences a torque of 2√...