8th ps ns physical science sa2 question paper 2023 PDF /ap 8th class physical science exam paper 2023 answer key
8th ps ns physical science sa2 question paper 2023 PDF: hello friends welcome to our blog and in this post you will see that the ap 8th ps ns physical science sa2 question paper 2023 PDF /ap 8th class physical science exam paper 2023 answer key
8th ps ns physical science sa2 question paper 2023 PDF
26. What procedures are followed to decrease friction
1) Using Lubricants 2) Using Ball Bearings 3) By polishing
A) 1,2
C) 1,2,3
D) 1,3
A) Newton
C) Newton/meter²
B) 2,3
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27. The unit of frictional force is
28. Saranya asked Ramcharan showing a book at rest on the table,
why the book is at rest though two forces are acting on it. What is
Ramcharan's answer?
A) Gravitational force and normal force are equal and they are in
same direction.
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B) Gravitational and normal force are unequal and they are
in oposite direction.
C) Gravitational and normal force are unequal and they are
in same direction.
D) Gravitational and normal force are equal and they are in opposite direction
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ap 8th class physical science exam paper 2023 answer key
29. Assertion (A): A ball moves faster on a smooth surface than on a rough
surface, when equal forces are applied on it.
Reason (R): Frictional force is more on rough surfaces.
teache
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A) A, R true, R is not correct reason for A
B) A is true, R is false.
C) A,R both are false
D) A, R true, R is the correct reason for A.
31. The material i
B) Newton/meter
D) Newton-meter
30. P: Suspend a spring balance from ceiling with the help of a thread.
Q: Observe the readings in spring balance gradually increasing the
weights to the hanger.
R: Add a weight of 50 gm to the hanger and observe the readings in spring
balance.
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S: Note the reading of the balance exactly when the thread brakes.
Arrange the above sentences in sequence of the experiment"
finding the limiting force of a thread".
A) P Q
R S
OP→R→Q→S
Newsan
B) S R Q→ P
D) P R S Q
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Suge to conduct laboratory activity of finde
A) Wooden table, brick, hacksaw blade,
A) They attract each other
B) They repple each c
other,
C) They first attra
D) Nothing happens.
C) Stand, pendulum, hacksaw blade.
D) Wooden table, wood, Brick.
32. A student inflated two rubber balloons and rubbed both of them
with wollen cloth. If he brings them together then
and then repple each other.
[Turn Over
33. What precautions do you take in the experiment "Burning test for
the identification of threads".
A) Should not be nearer to the flame while burning threads.
B) Should not hold threads with hand while burning.
C) Should not inhale the evolving smoke.
D) All the above.
