Which of the following statements about quantum computing are correct? Choose the correct answer from the options given below.

1.Principles of quantum physics are applied in it

2.Quantum bits (qubits) are used as the information unit

3.Quantum computers emit radiation fatal to humans or users

A1 and 2 only ✓ Correct

B1 and 3 only

C2 and 3 only

D1, 2 and 3 only

Correct answer: (A) 1 and 2 only

Explanation

Quantum computing applies quantum-physics principles and uses qubits as its information unit, so statements 1 and 2 are correct.

Applying quantum physics (item 1) is true; superposition and entanglement power it.

Using qubits (item 2) is true; a qubit can hold 0 and 1 simultaneously.

Emitting radiation fatal to users (item 3) is false; quantum computers pose no such hazard.

Qubits exploit superposition to process many states at once.

Richard Feynman proposed the idea of quantum computing in 1982.

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