# IGCSE Physics Paper-1: Specimen Questions with Answers 27 - 29 of 149

## Question 27

### Question

MCQ▾

A road has a length of 60 km. A bus takes 20 min to travel between the two ends of the road. Find average speed of the bus?

Choice (4)

a.

150 km/h

b.

3.0 km/h

c.

1000 km/h

d.

2.5 km/h

b.

### Explanation

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

## Question 28

### Question

MCQ▾

Which block has the lowest thermal capacity if same heat is applied and he temperature rise is given in the figure here?

Choice (4)

a.

b.

c.

d.

d.

### 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 180 C rising temperature has highest rising temperature thus it has the lowest thermal capacity.

## Question 29

### Question

MCQ▾

Why a person takes time to feel hot if he fills glass beaker with hot water?

### Choices

Choice (4)

a.

Glass is a poor conductor of heat.

b.

Water is a good conductor of heat.

c.

Water is a poor conductor of heat.

d.

Glass is a good conductor of heat.