lOMoAR cPSD| 66182461
Lom oarc ps d| 66182461
Please Write Clearly In Block Capitals.
Centre Number Candidate Number
Surname
Forename(S)
Candidate Signature
I Declare This Is My Own Work.
AS
PHYSICS
Paper 1
Wednesday 14 May 2025 Morning Time Allowed: 1 Hour 30
Minutes
Materials
For This Paper You Must Have: For Examiner’s Use
• A Pencil And A Ruler Question Mark
• A Scientific Calculator
• A Data And Formulae Booklet 1
• A Protractor. 2
3
Instructions
• Use Black Ink Or Black Ball-Point Pen. 4
• Fill In The Boxes At The Top Of This Page. 5
• Answer All Questions. 6
• You Must Answer The Questions In The Spaces Provided. Do Not
7
Write Outside The Box Around Each Page Or On Blank Pages.
• If You Need Extra Space For Your Answer(S), Use The Lined Pages At The TOTAL
End Of This Book. Write The Question Number Against Your Answer(S).
• Do All Rough Work In This Book. Cross Through Any Work You Do Not
Want To Be Marked.
• Show All Your Working.
Information
• The Marks For Questions Are Shown In Brackets.
• The Maximum Mark For This Paper Is 70.
• You Are Expected To Use A Scientific Calculator Where Appropriate.
• A Data And Formulae Booklet Is Provided As A Loose Insert.
*JUN257407101* Tyrionpapers.Com
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7407/1
, lOMoAR cPSD| 66182461
2
Do Not
Write
Answer All Questions In The Spaces Outside The
Box
Provided.
0 1 Hydrogen Has Three Naturally Occurring Isotopes. One Of These
( )
Isotopes Is Hydrogen-3 3H .
1
0 1 . 1 Calculate The Specific Charge Of A Nucleus Of
Hydrogen-3. [2 Marks]
Specific Charge = C Kg−1
0 1 . 2 The Specific Charge Of The Hydrogen-3 Nucleus Is Less Than The Specific Charges
Of The Nuclei Of The Other Two Isotopes.
Suggest Why.
[2 Marks]
, lOMoAR cPSD| 66182461
*02* Tyrionpapers.Com
IB/M/Jun25/7407/1
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3
Do Not
Write
Kaons (K) And Pions (Π) Are Produced When A Beam Of Antiprotons Is Incident Outside The
Box
On A Sample Of Hydrogen Gas.
One Reaction That Occurs Is
P + P → K − + Π + + K0
0 1 . 3 Deduce, With Reference To Appropriate Conservation Laws, The Quark Structure Of The
K0 Produced In This Reaction.
[3 Marks]
Quark Structure =
0 1 . 4 One Possible Decay Of A Π+ Particle Is
Π+ → A + B
Where A Is A Charged Lepton.
Suggest, With Reference To Appropriate Conservation Laws, The Name Of A
And The Name Of B.
[2 Marks]
Name Of A
Name Of B 9
*03*
Lom oarc ps d| 66182461
Please Write Clearly In Block Capitals.
Centre Number Candidate Number
Surname
Forename(S)
Candidate Signature
I Declare This Is My Own Work.
AS
PHYSICS
Paper 1
Wednesday 14 May 2025 Morning Time Allowed: 1 Hour 30
Minutes
Materials
For This Paper You Must Have: For Examiner’s Use
• A Pencil And A Ruler Question Mark
• A Scientific Calculator
• A Data And Formulae Booklet 1
• A Protractor. 2
3
Instructions
• Use Black Ink Or Black Ball-Point Pen. 4
• Fill In The Boxes At The Top Of This Page. 5
• Answer All Questions. 6
• You Must Answer The Questions In The Spaces Provided. Do Not
7
Write Outside The Box Around Each Page Or On Blank Pages.
• If You Need Extra Space For Your Answer(S), Use The Lined Pages At The TOTAL
End Of This Book. Write The Question Number Against Your Answer(S).
• Do All Rough Work In This Book. Cross Through Any Work You Do Not
Want To Be Marked.
• Show All Your Working.
Information
• The Marks For Questions Are Shown In Brackets.
• The Maximum Mark For This Paper Is 70.
• You Are Expected To Use A Scientific Calculator Where Appropriate.
• A Data And Formulae Booklet Is Provided As A Loose Insert.
*JUN257407101* Tyrionpapers.Com
IB/M/Jun25/G4003/V3
7407/1
, lOMoAR cPSD| 66182461
2
Do Not
Write
Answer All Questions In The Spaces Outside The
Box
Provided.
0 1 Hydrogen Has Three Naturally Occurring Isotopes. One Of These
( )
Isotopes Is Hydrogen-3 3H .
1
0 1 . 1 Calculate The Specific Charge Of A Nucleus Of
Hydrogen-3. [2 Marks]
Specific Charge = C Kg−1
0 1 . 2 The Specific Charge Of The Hydrogen-3 Nucleus Is Less Than The Specific Charges
Of The Nuclei Of The Other Two Isotopes.
Suggest Why.
[2 Marks]
, lOMoAR cPSD| 66182461
*02* Tyrionpapers.Com
IB/M/Jun25/7407/1
, lOMoAR cPSD| 66182461
3
Do Not
Write
Kaons (K) And Pions (Π) Are Produced When A Beam Of Antiprotons Is Incident Outside The
Box
On A Sample Of Hydrogen Gas.
One Reaction That Occurs Is
P + P → K − + Π + + K0
0 1 . 3 Deduce, With Reference To Appropriate Conservation Laws, The Quark Structure Of The
K0 Produced In This Reaction.
[3 Marks]
Quark Structure =
0 1 . 4 One Possible Decay Of A Π+ Particle Is
Π+ → A + B
Where A Is A Charged Lepton.
Suggest, With Reference To Appropriate Conservation Laws, The Name Of A
And The Name Of B.
[2 Marks]
Name Of A
Name Of B 9
*03*
