IGCSE Physics Paper-1: Specimen Questions with Answers 49 - 52 of 149

Question 49

Question

MCQ▾

Speed-time graph at constant speed for 2 objects is given. Which particle traveled higher distance in first 3 sec?

Two Graphs of Speed ⟶ Time

Choices

Choice (4)

a.

object1

b.

object 2

c.

same speed

d.

All of the above

Answer

a.

Explanation

For Object 1:

Here in given figure we show that an object 1 moving at constant speed 2 m/s.

Here we want to find the distance traveled by the object in first 3 sec. Therefore from formula of speed,

Question 50

Question

MCQ▾

Find output voltage if transformer has 240 V connected to its primary with a primary coil of 1,200 turns and a secondary coil of 120 turns.

Choices

Choice (4)

a.

200V

b.

240V

c.

2,400 V

d.

24V

Answer

d.

Explanation

Here Primary coil = 1,200 turns

Secondary coil = 120 turns are given.

Now, output voltage can be calculated as,

Question 51

Question

MCQ▾

Find neutrons if an atom of lithium contains three protons and three electrons and nucleon number (mass number) of the atom is 7.

Choices

Choice (4)

a.

3

b.

6

c.

10

d.

4

Answer

d.

Explanation

Number of neutron can be find as,

Question 52

Question

MCQ▾

The weights of three objects are given. Which is heaviest?

Comparing the Weights of Three Objects

Choices

Choice (4)

a.

object 3

b.

object 1

c.

object 2

d.

Question does not provide sufficient data or is vague

Answer

a.

Explanation

Here in above we shows that

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

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

So, we can say that objects 1 & 3 are heavier than the object 2

But from (c) diagram we can see that object 3 is heavier than the object 1. Therefore object 3 is heaviest than object 1 and 2.

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