Who has stolen my binoculars ........

English (SSC) Active/Passive voice

Who has stolen my binoculars?

By who has my binoculars been stolen?

By whom has my binoculars been stolen?

By whom have my binoculars been stolen?

None of these

‘Binoculars’ take plural verb like spectacles, jeans etc. But here ‘has’ is used for ‘who’.
Who – passive – by whom

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