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1.

A man walks 1km due east and then 1 km due north His displacement

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A.
?2km N 45°E
B.
1km N 30°E
C.
1km N 15°E
D.
?2km N 60°E

2.

The density of 400cm of palm oil was 0.9gcm-3 before frying. If the density of the oil was 0.6gm-3 after frying, assuming no loss of oil due to spilling, its new volume was?

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A.
1360cm\(^3\)
B.
600cm\(^3\)
C.
240cm\(^3\)
D.
8000m\(^3\)

3.

Natural radioactivity consists of the emission of

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A.

α - particles and γ - rays

B.

α - particles and X-rays

C.

α - particles,  β- rays and γ -rays

D.

γ - rays and X-rays


4.

Which of the following is true of an electrical charge?

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A.
Positive charge means deficit electrons
B.
Negative charge means excess of electrons
C.
electric current means movement of electrons
D.
All of the above

5.

Which of the following does NOT describe the Image formed by a plane minor?

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A.
Erect
B.
Laterally inverted
C.
Same distance from mirror as object
D.
Magnified

6. q-image

What is the resultant resistance of the circuit in the image shown?

 

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A.
8 Ω
B.
11 Ω
C.
4 Ω
D.
3.6 Ω

7.

Which of the following best describes the energy changes which take place when a steam engine drives a generator which lights a lamp?

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A.
heat ----> Light----> Sound ----> Kinetic
B.
Kinetic ----> Light ----> Heat ----> Electricity
C.
heat ----> Kinetic ----> Electricity ----> Heat and Light
D.
electricity ----> Kinetic ----> Heat ----> Light

A.
High-energy electromagnetic waves
B.
protons
C.
neutrons
D.
streams of electrons

9.

A narrow beam of white light can be split up into different Colours by a glass prism. The correct explanation is that

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A.
white light Is an electromagnetic wave
B.
the prism has all the colours of the white light
C.
different colours of white light travel with different speeds in glass
D.
white light has undergone total Internal reflection in the prism

10. q-image

The diagram shown represents a block-and-tackle pulley system on which an effort of W Newtons supports a load of 120.0N. If the efficiency of the machine is 40, then the value of W is?

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A.
28.0
B.
48.0N
C.
233.0N
D.
50.0N

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