(A) (i) Draw a diagram showing the magnetic field lines around a bar magnet. Write any two characteristics…
(A) (i) Draw a diagram showing the magnetic field lines around a bar magnet. Write any two characteristics of magnetic field lines.
(ii) Write the statement of Right hand thumb rule.
(iii) The concentric circles representing the magnetic field around a current carrying straight wire become larger and larger as we move away from the wire. How does magnetic field change on these concentric circles ?
Solution
(A) (i)
Characteristics:
• The magnet field lines emerge from north pole and merge
at south pole. Inside the magnet, the direction of field lines
is from its south pole to its north pole. Thus, the magnetic
field lines are closed curves.
• The relative strength of the magnetic field is shown by the
degree of closeness of the field lines.
PAGE9 (SET 31/5/1)
• No two field-lines are found to cross each other. (1+1)
(any two)
(ii) Imagine that you are holding a current carrying straight
conductor in your right hand such that the thumb points
towards the direction of current. Then your fingers will wrap
around the conductor in the direction of field lines of the
magnetic field.
(iii) As the concentric circles become larger and larger, the
magnetic field decreases.
OR
(B)
(i)
Salient features:
• The pattern of the magnetic field lines in a solenoid is
similar to that of a bar magnet.
• Field lines inside the solenoid are in the form of parallel
straight lines.
(ii)
• A magnetic material which behaves like a magnet on
passing electric current through it is called an
electromagnet.
• It is made by wrapping a current carrying insulated
copper wire in the form of a coil around a magnetic
/
material like soft iron By placing a magnetic material
like soft iron as a core material inside the current carrying
solenoid.
PAGE10 (SET 31/5/1)
Marking Scheme
Strictly Confidential
(For Internal and Restricted use only)
Secondary School Examination, 2026 (Xth)
SUBJECT NAME SCIENCE (Q.P. CODE /Set No 31/5/2)
General Instructions: -
1 You are aware that evaluation is the most important process in the actual and correct
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These are in the nature of Guidelines only and do not constitute the complete answer.
The students can have their own expression and if the expression is correct, the due
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5 The Head-Examiner must go through the first five answer books evaluated by each
evaluator on the first day, to ensure that evaluation has been carried out as per the
instructions given in the Marking Scheme. If there is any variation, the same should be
zero after deliberation and discussion. The remaining answer books meant for
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Question”.
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PAGE 1 (31/5/2)
11 A full scale of marks 80 (example 0 to 80/70/60/50/40/30 marks as given in Question
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Examiner in the past :-
● Leaving answer or part thereof unassessed in an answer book.
● Giving more marks for an answer than assigned to it.
● Wrong totaling of marks awarded on an answer.
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Half or a part of answer marked correct and the rest as wrong, but no marks awarded.
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should be marked as cross (X) and awarded zero (0) Marks.
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detected by the candidate shall damage the prestige of all the personnel engaged in the
evaluation work as also of the Board. Hence, in order to uphold the prestige of all
concerned, it is again reiterated that the instructions be followed meticulously and
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over to the title page, correctly totaled and written in figures and words.
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payment of the prescribed processing fee. All Examiners/Additional Head
Examiners/Head Examiners are once again reminded that they must ensure that
evaluation is carried out strictly as per value points for each answer as given in the
Marking Scheme.
PAGE 2 (31/5/2)
MARKING SCHEME
SCIENCE (Subject Code-086)
(