NAME…………………………………………………………………..……..ADM
NO……………
Stream……………………………DATE…………………
STUDENT’S SIGNATURE ……………………....
PHYSICS
Form one
TIME: 1 ½ HOURS
July 2018
INSTRUCTIONS:
Attempt all questions in the spaces provided below each question.
1. Masses
of a measuring cylinder before and after pouring some liquid are shown in the
diagram. What is the density of the liquid? (2
marks)
2. Weight
changes from place to place, explain. (2
marks)
3. Define
force and give its SI unit. (2
marks)
4. The
diagram below shows three forces acting on a body. Sketch a new diagram to the
resultant force on the body. (2
marks)
5. Trucks
which carry heavy loads have many wheels. Explain. (2 marks)
6. Give
three factors that affect pressure in liquids. (3 marks)
7. A
tall container has two holes one at the middle and the other near the bottom.
Both holes are initially closed with plasticine. Both holes have equal
diameter. Which hole is more likely to open when the container is filled with
water? Give a reason for your answer. (2 marks)
8.
(a) Explain
why brakes of a vehicle fail when air enters in the brake pipes. (2
marks)
(b) (b)In
the figure below, the pressure of the liquid due to force of 80N is able to
lift a box.
(i)Find the
pressure at piston L in N/m2. (3 marks)
(ii)Find the
pressure at piston K. (1 mark)
(iii)Find the
force lifting the box. (3 marks)
(c)Explain why liquid is used in
hydraulic system instead of gas. (2 marks)
9. Brownian
motion of smoke particles can be studied by using the apparatus shown
a) Explain
the role of; (3
marks)
i)
Convex lens
ii)
Microscope
iii)
Smoke particles
b) State
and explain the observation made. (3
marks)
c) State
what will be observed if the temperature of the environment is lowered. (1
mark)
d) What
conclusion can be made from this experiment? (1 mark)
10. The diagram below shows arrangement of
particles in the states of matter.
a) Name
the processes (5
marks)
i)
A___________________
ii)
B___________________
iii)
C___________________
iv)
D___________________
v)
E____________________
b) Differentiate
between solids, liquids and gases in terms of intermolecular forces. (3
marks)
11. In the
figure below, ammonia gas and acid gas diffuse and react to form a white
deposit on the walls of the glass tube. The deposit forms nearer B.
a) Which
gas diffuses faster? (1
mark)
b) Explain
why the gas in (a) above diffuses faster than the other. (2 marks)
c) State
and explain the observation made if the experiment was conducted at a higher
temperature. (3
marks)
12. Explain
three effects of anomalous expansion of water. (6 marks)
13. A
man wants to fit a brass ring tightly into a steel rod of diameter equal to the
inner diameter of the ring. Explain how this can be achieved. (2 marks)
14. The
diagram below shows water in a round bottomed fitted with a narrow tube.
Explain the observation made on the
level of the water if the set-up is placed in the refrigerator. (3 marks)
Good
ReplyDelete
ReplyDeleteKarnataka board will release the 2nd PUC result 2021 one month after the conclusion of examinations. Students can check their Karnataka 2nd PUC result PUC Result 2021 Students can also make use of the direct link given on this page to download their PUC results 2021.