A black body emitting all the radiation in the visible region appears________. April 17, 2025 by admin A. Green B. White C. Blue D. BlackThe correct answer to the question: "A black body…
A photon is always considered to be: ________? April 17, 2025 by admin A. Moving with speed of light B. At rest C. In accelerated form D. Moving with speed of soundThe correct answer to the…
The antiparticle of electron is: ______? April 17, 2025 by admin A. Proton B. Meson C. Neutron D. PositronThe correct answer to the question: "The antiparticle of…
Earth’s orbital speed is __________? April 17, 2025 by admin 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…
Which instrument is used to detect path of visible rays? April 17, 2025 by admin A. Geiger counter B. Wilson Cloud Detector C. Solid State Detector D. None of the aboveThe 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: April 17, 2025 by admin A. Spin motion B. Orbital motion C. Rectilinear motion D. Translatory motionThe correct answer to the question: "If the…
Relation between linear velocity and angular velocity: April 17, 2025 by admin A. v=rw B. r=vw C. s=r D. ∆s/∆tThe correct answer to the question: "Relation between linear…
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. April 17, 2025 by admin A. be quadrupled B. be doubled C. be halved D. remain unchangedThe correct answer to the question: "A potential…
A wire of uniform area of cross -section A length L and resistance R is cut into two parts. The resistivity of each part: April 17, 2025 by admin A. Become zero B. Is halved C. Is doubled ) D. remains sameThe correct answer to the question: "A wire…
The waves which are used for line of sight (LOS) communication are called: April 17, 2025 by admin A. Space waves B. Cable waves C. Antenna waves D. None of these
