Questions

The ultraviolet rays have high frequency and shorter wavelength are converted to visible white light with lower frequency and greater wave length

The task manager enables you to monitor processes, applications and services currently running on your computer. You can use it to start and stop programs and processes. In addition, you can use the task manager to show informative stats about your PC’s performance and network.

Hence, to delete a program from the hard drive, you have to go to the control panel to uninstall an application properly.

The most common two letter combinations are called as digrams. e.g. th, in, er, re and an. The most common three letter combinations are called as trigrams. e.g. the, ing,and, and ion.

Domestic policy is an area of public policy which concerns laws, government programs, and administrative decisions which are directly related to all issues and activity within a nation's borders.

It differs from foreign policy, which refers to the ways a government advances its interests in world politics.

Hence, Option A, The Supreme Court strikes down a law that bans importing inefficient automobiles is an example of domestic policy action.

As against malloc(), calloc() needs two arguments, the number of elements  to be allocated and the size of each element. For example,

 p = (int *) calloc (10, sizeof (int));

would allocate space for a 10- integer array. Additionally, calloc() would also set each of this element with a value 0.

Thus the above call to calloc() is equivalent to:

p = (int *) malloc (10 * sizeof (int));

memset (p, 0, 10 * sizeof( int ));