CIE Physics Paper-1: Specimen Questions 94 - 96 of 109

Question number: 94

MCQ▾

Question

4 divers are there, 2 in sea water and 2 in fresh water. Which diver will face lowest pressure known that oil is denser than sea water?

Divers are swimming in sea water and oil.

Divers are swimming in sea water and oil.

In figure shows that two divers A and B are swimming in sea water and divers two C and D are swimming in oil.

Choices

Choice (4) Response
a.

C

b.

D

c.

A

d.

B

Answer

c.

Explanation

Pressure in liquid we can define as

P=ρgh

Where ρ = Density of liquid

g = Gravitational acceleration

h = Height above the point at which we measure the pressure

In this case density of sea water is rarer than the oil and height of diver A is less.

Thus on diver A is there the lowest pressure.

Question number: 95

MCQ▾

Question

Find average speed of the car if tunnel is of length 50 km and car takes 20 minutes to cover it?

Choices

Choice (4) Response
a.

1000 km/h

b.

16.6 km/h

c.

2.5 km/h

d.

150 km/h

Answer

c.

Explanation

Here to find the average speed we can use the formula for this is given as,

Averagespeed=totaldistanceelapsedtime

=5020

=2.5kmh

Question number: 96

MCQ▾

Question

The boy weighs more than the girl and both run the top of the hill. What would be power?

A boy and a girl and their weights

A boy and a girl and their weights

A boy having weight 600 N and a girl having weight 500 N run up a hill in the same time. The weights are described in figure.

Choices

Choice (4) Response
a.

It is impossible to tell who produces more power.

b.

They both produce the same power.

c.

The boy produces more power.

d.

The girl produces more power.

Answer

c.

Explanation

Here boy and girl both run up a hill at same time.

Now power produced means energy transfer per time.

Now both have same time, but transfer energy is different. Because it is directly depends on weight.

Then if mass is more the energy is more so the boy produced more power.

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