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Home
All Subjects
CSS
CSS MPT
CSS Subjects MCQs
CSS Past Papers
Past Papers
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Departmental Past Papers
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PPSC
SPSC
BPSC
KPPSC
Current Affairs
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Subject:
Physics
Rest mass of a photon is________________?
A.
infinite
B.
zero
C.
very small
D.
1.67 x 10-27 kg
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