Physics
2025 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE PH 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 10–12 of 65. Imported answers require review unless explicitly marked reviewed.
Question 10
Open questionGAMCQ2 marksNeeds review
An object is said to have an
-fold rotational symmetry if the object, rotated by an angle
, is identical to the original.Which one of the following objects exhibits 4-fold rotational symmetry about an axis perpendicular to the plane of the screen?
Note: The figures shown are representative.
Your answerChoose one option.
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Open questionPHMCQ1 markNeeds review
For a two-dimensional hexagonal lattice with lattice constant
, the atomic density isYour answerChoose one option.
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Open questionPHMCQ1 markNeeds review
Consider a crystal that has a basis of one atom. Its primitive vectors are
,
,
, where
,
,
are the unit vectors in the
,
and
directions of the Cartesian coordinate system and
is a positive constant. Which one of the following is the correct option regarding the type of the Bravais lattice?Your answerChoose one option.
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