CIE Physics Paper-1: Specimen Questions 41 - 44 of 109

Question number: 41

MCQ▾

Question

Which is a unit of density?

Choices

Choice (4) Response
a.

cm3g

b.

kgm2

c.

gcm2

d.

gcm3

Answer

d.

Explanation

Density is defined as mass per unit volume.

density=massvolume

Now unit of mass is gram or kg

And unit of volume is cm3 or m3

Hence, unit of density is gcm3

Question number: 42

MCQ▾

Question

What metal should be used in magnetizing coil to make a temporary magnet from a piece of metal?

Magnetizing coil consist of metal road

Magnetizing coil consist of metal road

Figure shows a magnetizing coil wounded on a metal road and connected with battery

Choices

Choice (4) Response
a.

Aluminum

b.

copper

c.

steel

d.

soft iron

Answer

d.

Explanation

Only iron and steel shows the magnetic effect during electric current flow in the coil. But soft iron is used to make temporary magnet because it loses the magnetism after the electricity switched off.

Question number: 43

MCQ▾

Question

Find neutrons if atom of carbon has six protons and six electrons and nucleon number (mass number) of the atom is 12.

Choices

Choice (4) Response
a.

4

b.

3

c.

6

d.

10

Answer

c.

Explanation

Number of neutron can be find as,

Massnumber=numberofproton+numberofneutron

Nn=ZNp

Nn=126

Nn=6

Question number: 44

MCQ▾

Question

Which one of the child has minimum weight?

Three children comparing their weights with the help of seesaw

Three children comparing their weights with the help of seesaw

Three children X, Y and Z are comparing their weight with the help of see-saw are shown in figure.

Choices

Choice (4) Response
a.

X

b.

Y

c.

Z

d. None of the above

Answer

b.

Explanation

Here from given figure one can conclude that

From first figure in weight Y > Z

From second figure Y > X

And from third figure Z > X

So, from all three results one can write Y>Z>X

Therefore Y has maximum weight.

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