How To Disable On Lock Screen For Notification Drawer I Finally Fix Notification Bar #Short

In the following question a statement is given followed by two courses of action. A course of action is taken for improvement, follow-up, etc. Read the statement carefully and give answer 1) if only course of action I follows. 2) if only course of action II follows. 3) if either course of action I or II follows. 4) if both courses of action I and II follow 5) if neither course of action I nor II follows. Statement: The railways have decided to repair the main tracks within the city on the following Sunday and have decided to suspend operations for the whole day. Courses of action: I. The railway authority should issue public notification well in advance to ease inconvenience to the passengers. II. All the long-distance trains entering the city during the repair hours should be terminated outside the city limit.

(a) What is a wave front? How does it propagate? Using Huygens' principle, explain reflection of a plane wavefront from a surface and verify the laws of reflection. (b) A parallel beam of light of wavelength 500 nm falls on a narrow slit and the resulting diffraction pattern is obtained on a screen 1 m away. If the first minimum is formed at a distance of 2.5 mm from the centre of screen, find the (i) width of the slit, and (ii) distance of first secondary maximum from the centre of the screen.

A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased. a. what is the initial effect of the change on vapour pressure? b. How do rates of evaporation and condensation change initially? c. What happens when equilibrium is restored finally and what will be the final vapour pressure?

A short bar magnet of moment 0*32JT^-1 is placed in a uniform external magnetic field of 0*15T , if the bar is free to rotate in the plane of the field, which orientations would correspond to its, (i) stable and (ii) unstable equilibrium? What is the potential energy of the magnet in each case?

The given bar graph shows the sale of different brands of shirts in a shop in one month. (i) How many total shirts are sold in the month ?