Which of the following changes would increase the seperation between the bright fringes in the diffraction pattern formed by diffraction grating?A. INCREASE THE WAVELENGTH OF THE LIGHTB. IMMERSE THE APPARATUSE IN WATERC. INCREASE THE SEPERATION BETWEEN THE SLITSD. NONE OF THESEE. MORE THAN ONE OF THESE

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.