y1=4sin(ωt+kx), y2=-4cos(ωt+kx), the phase difference is                      

Related MCQs

• The probability of spontaneous emission increases rapidly with the energy difference between the two states.
• A large heat exchanger transfers a total of 100 MW. Assume the wall separating steam and seawater is 4 mm of steel, conductivity 15 W/m K and that a maximum of 5°C difference between the two fluids is allowed. Find the required minimum area for the heat transfer.
• A small light bulb (25 W) inside a refrigerator is kept on and 50 W of energy from the outside seeps into the refrigerated space. How much of temperature difference to the ambient(at 20°C) must the refrigerator have in its heat exchanger having an area of 1 m2 and heat transfer coefficient of 15 W/Km2 to reject the leak of energy.
• 16 W/m K, with a temperature difference between the two sides of 20°C.
• The amount of heat flow through a unit area of material of unit thickness in one hour, when the temperature difference is maintained at 1°C is known as                         of the material.
• For destructive interference to take place, the path difference between the two waves should be:
• What term is used for the defect, produced by an array of dislocations that produces a small difference in orientation between the adjoining lattices?