IGCSE Physics Paper-1: Specimen Questions with Answers 112 - 114 of 149

Question number: 112

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Question

Which particles do not experience an electromagnetic force?

Choices

Choice (4)Response

a.

gamma rays

b.

particles

c.

Electrons

d.

protons

Answer

d.

Explanation

  • Charged particles interact by emitting and absorbing photons.

  • Photons do not experience an electromagnetic force,

  • And they do not interact with each other.

  • The electromagnetism is produced by the energy and momentum they carry.

Question number: 113

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Question

A ruler is used to measure length of pen.

Image of Length of pen

Image of Length of Pen

What would be the length of the pen?

Choices

Choice (4)Response

a.

47 cm

b.

41 cm

c.

39 cm

d.

50 cm

Answer

a.

Explanation

Length of pen answer

Length of Pen Answer

  • The length of the pen would be 47cm.

  • The tip of the pen is at 6cm on scale and end of the pen at 53cm.

  • The required length is .

Question number: 114

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Question

Which of the following symbol is for the Light Dependent Resister?

Choices

Choice (4)Response

a.

Light Dependent Resister? part -2

Light Dependent Resister? Part -2

b.

Light Dependent Resister? part -3

Light Dependent Resister? Part -3

c.

Light Dependent Resister? part -4

Light Dependent Resister? Part -4

d.

Light Dependent Resister? part -1

Light Dependent Resister? Part -1

Answer

c.

Explanation

  • In the dark conditions the Light dependent resistor LDR has a high resistance.

  • In the light the resistance of the LDR is very low.

  • The symbol of the Light Dependent Resistor is

Light Dependent Resister?

Light Dependent Resister?

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