Physics MCQs with Answers

A. Green B. White C. Blue D. Black The correct answer to the question: “A black body emitting all the radiation in the visible region appears________.” is “White”.

A. Moving with speed of light B. At rest C. In accelerated form D. Moving with speed of sound The correct answer to the question: “A photon is always considered to be: ________?” is “Moving with speed of light”.

A. Proton B. Meson C. Neutron D. Positron The correct answer to the question: “The antiparticle of electron is: ______?” is “Positron”.

A. 70 km/s B. 60 km/s C. 45 km/s D. 30 km/s  Earth’s average orbital speed around the Sun is approximately 30 kilometers per second (km/s). The correct answer to the question: “Earth’s orbital speed is __________?” is “30 km/s “.

A. Geiger counter B. Wilson Cloud Detector C. Solid State Detector D. None of the above The correct answer to the question: “Which instrument is used to detect path of visible rays?” is “Wilson Cloud Detector”.

A. Spin motion B. Orbital motion C. Rectilinear motion D. Translatory motion The correct answer to the question: “If the axis of rotation passes through the body and the body moves around itself then the motion is called:” is “Spin motion”.

A. v=rw B. r=vw C. s=r D. ∆s/∆t The correct answer to the question: “Relation between linear velocity and angular velocity:” is “v=rw”.

A. be quadrupled B. be doubled C. be halved D. remain unchanged The correct answer to the question: “A potential difference is applied across the ends of a wire. If the potential difference is doubled, then the drift velocity of free electron will.” is “be doubled”.

A. Become zero B. Is halved C. Is doubled )D. remains same The correct answer to the question: “A wire of uniform area of cross -section A length L and resistance R is cut into two parts. The resistivity of each part:” is “remains same”.

A. Space wavesB. Cable wavesC. Antenna wavesD. None of these