Physics Exam 2015 : MC Questions 1 - 15

These questions are taken from the Grade Physics National Examination 2015.  The questions are posted in parts.  See the other posts to see the complete paper . The Answers are provided at the end of this post. Make sure to attempt the Question by commenting below before you view the Answers by hitting the (+) on the read shaded area. 

QUESTION 1
Which instrument would be appropriate for measuring the thickness of an A4 sheet of paper?
A.    A Vernier Calliper
B.    A meter ruler
C.    A micrometer
D.    A top pan balance
E.    A 30 cm ruler

QUESTION 2
Which of the following combination of basic SI units is a joule (J)?
A.   kg ms-2 
B.   kg m-1 s-2 
C.   kg m-2 s-2
D.   kg m-1 s-1
E.   kg m-1s-2

QUESTION 3
A ball is thrown up in air and returns to the thrower. During its motion, the acceleration of the ball
A.    remains constant and directed upwards for all times.
B.    remains constant and directed downwards for all times.
C.    changes in magnitude and directed downwards for all times.
D.    changes in magnitude and directed upwards for all times.
E.    remains constant but directed upwards when the ball is moving up and is directed downwards when the ball is moving downwards.

QUESTION 4
The area under the velocity-time graph for an object moving with constant acceleration represents
A.   momentum.
B.   initial velocity.
C.   acceleration.
D.   final velocity.
E.   displacement.

QUESTION 5
A projectile is launched upwards at an angle less than 90°
, relative to the horizontal. During its motion, the
velocity in the horizontal direction
A.    changes.
B.    remains constant always.
C.     is zero at maximum height of the projectile.
D.    is always positive on the way up only.
E.     is always negative on the way down only. 

QUESTION 6
According to Newton’s second law of motion, force is directly proportional to rate of change of
A.    square of linear velocity.
B.    square of linear acceleration.
C.     linear velocity.
D.     linear momentum.
E.     linear acceleration. 

QUESTION 12
Which of the following description best suits a state of matter in a gaseous form?
A.   Strong bonds between their molecules making them very difficult to break. Have fixed shape and volume

B.  Having a fixed volume, but their shape is determined by the shape of the container holding them. They
have weak bonds between their molecules.

C. Virtually no bonds between their molecules. They have no fixed shapes and volume in the container they occupy.
D. The bonds between them is week, but have fixed volume and shape.

E. Virtually no bonds existing between their molecules. Spread into available space and their volume is
determined by the shape and size of the container holding them. 

QUESTION 14
Heat can be transmitted in three main ways, conduction, convection and radiation. Which of the following way(s) do not require a medium of heat transfer?
A.  Convection
B.  Conduction
C.  Radiation
D.  Radiation and Conduction
E.  Convection and Radiation

QUESTION 15
A change of state directly from a solid to a gas without going through a liquid state is called
A.  Condensation
B.  Vaporization
C.  Radiation
D.  Sublimation
E.  Ionization


Note: Make sure, you attempt the questions first before you view the Answers below.   Also see the remaining questions on the next post. 

ANSWERS

​1. A/C
2. B
3. B
4. E
5. B
6. D
7. C
8. B
9. A
10. B
11. A
12. E
13. B
14. C
15. D