Emissivity of perfectly black body isA) A) A) A)C) C) C) C)2- Work done will be maximum when angle between Force anddisplacement isA) 180 B) 60C) 90 D) 03- Energy transforming process that occur within an organism are namedasA) A) A) A)C) C) C) C)4-________ is equal to the amount of current multiplied by the resistanceA) Potential B) Potential DifferenceC) Charge D) Current5- Two long current carrying wires attract each other when currents are in_____.A) Opposite Direction B) Same DirectionC) Parallel Direction D) SeriesSection IV – Computers1- MS-DOS hasA) Command Line Interface B) Graphical User InterfaceC) Menu Line Interface D) Utility Driven Interface2- Identify the device through which data and instructions are entered into acomputer?A) Software B) Input DeviceC) Output Device D) Memory3- (35)10= ( )2?A) 100011 B) 110011C) 100001 D) 1110014- Arrange in descending order the units of memory TB, KB, GB, MBA) TB>MB>GB>KB B) MB>GB>TB>KBC) TB>GB>MB>KB D) GB>MB>KB>TB5- The term _______ is used to refer to a row.A) Attribute B) TupleC) Instance D) Field

1- The emissivity of a perfectly black body is 1. This is because a perfectly black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence.

2- Work done will be maximum when the angle between Force and displacement is 0 degrees. This is because work is calculated as the dot product of force and displacement vectors, and the dot product is maximum when the angle between the two vectors is zero.

3- The energy transforming processes that occur within an organism are named as Metabolism. It includes all the chemical reactions that occur within the cells of living organisms.

4- Voltage (or Potential Difference) is equal to the amount of current multiplied by the resistance. This is according to Ohm's Law which states that V=IR.

5- Two long current carrying wires attract each other when currents are in the same direction. This is based on Ampere's force law.

Section IV – Computers

1- MS-DOS has a Command Line Interface. It is a non-graphical operating system that provides a command line from which system commands can be entered.

2- The device through which data and instructions are entered into a computer is an Input Device. Examples include a keyboard, mouse, scanner, etc.

3- (35)10= (100011)2. This is the binary equivalent of the decimal number 35.

4- Arrange in descending order the units of memory TB, KB, GB, MB: TB>GB>MB>KB. TB (Terabyte) is the largest unit, followed by GB (Gigabyte), MB (Megabyte), and KB (Kilobyte) is the smallest.

5- The term Tuple is used to refer to a row in the context of databases. It represents a single, implicitly structured data item in a table.