IGCSE Physics Paper-1: Specimen Questions with Answers 123 - 126 of 149

Question number: 123

Edit

MCQ▾

Question

The diagram shows some liquid in a measuring cylinder. The mass of the liquid is 20g. What is density of the liquid?

Image of the Cylinder

Image of the Cylinder

Choices

Choice (4)

a.

b.

1 g/

c.

g/

d.

Answer

c.

Explanation

  • Density =

  • From the diagram the volume of the liquid is

  • Mass of the liquid = 20g

  • Density = = g/

Question number: 124

Edit

MCQ▾

Question

Which of the following is a S. I unit of pressure?

Choices

Choice (4)

a.

Meters

b.

Hertz

c.

Ampere

d.

Pascal

Answer

a.

Explanation

  • The S. I unit for pressure is Pascal (pa) which is equal to the N/m2

  • Hertz is the unit of Frequency

  • Ampere is a unit of current.

  • Meters are the units of measurements.

Question number: 125

Edit

MCQ▾

Question

A person clapped his hands near a building and heard echo after 10s. What is the distance of the building from the person if the speed of the sound is taken as 230 m/s?

The Clapped his hands

The Clapped His Hands

Choices

Choice (4)

a.

1000m

b.

3200m

c.

2300m

d.

1150m

Answer

d.

Explanation

  • The time taken for echo to be heard t = 10s

  • Seed of sound (u) = 230m/s

  • Distance travelled by the sound (d)

  • d is the distance between person to building and building to the person.

  • Distance of the building to the person =

Question number: 126

Edit

MCQ▾

Question

Which circuit is an open circuit?

Choices

Choice (4)

a.

Image of the Circuit -4

b.

Image of the Circuit -2

c.

Image of the Circuit -3

d.

Image of the Circuit -1

Answer

a.

Explanation

Image of the Circuit

Image of the Circuit

  • The electric circuit must be closed to pass the electricity through it.

  • In the above circuit D the switch is opened.

  • It means it the circuit is disconnected;

  • There would no current will passes through it.

Choose Paper