IGCSE Physics Paper-1: Specimen Questions with Answers 89 - 90 of 109

Question number: 89

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Question

Which block has the highest thermal capacity if same heat is applied but temperature rise is different?

Choices

Choice (4) Response

a. Temperature Rise is 18℃ This image is of 18℃.

b. Temperature Rise is 3℃ This image is of 3℃.

c. Temperature Rise is 9℃ This image is of 9℃.

d. Temperature Rise is 6℃ This image is of 6℃.

b.

Explanation

Here we show four block. Each of have different value of rise temperature. Now as we know that thermal capacity is a measurable physical quantity which can be define as “The ratio of heat added to an object to the resulting temperature change. ”

Then we can write block of 30 C rising temperature has lowest rising temperature thus it has the highest thermal capacity.

Question number: 90

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Question

The weights of four objects is measured. Which object seems to be lightest? Comparing the Weights of Four Objects 1,2, 3 and 4. In figure three positions of balance are shown in those comparisons of four objects are shown.

Choices

Choice (4) Response

a.

Object 2

b.

Object 1

c.

Object 3

d.

Object 4

d.

Explanation

Here in above we shows that

In (a) diagram we shows that object 2 is lighter than object 1

In (b) diagram we shows that object 2 is lighter than object 3

So, we can say that object2 is lighter than 1 and 3

But from (c) diagram we can see that object 4 is lighter then object 2

Hence, object 4 is the lightest