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In semiconductors, a hole is the absence of an electron in the valence band and acts as a positive charge carrier . When an electron gets excited to the conduction band, it leaves behind a hole. While both electrons and holes contribute to conduction, they move differently and do not have the same mobility . Electrons generally have higher mobility than holes due to their lower effective mass and freer movement in the conduction band.
Which one of the following statements best reflects the idea behind the “Fractional Orbital Bombardment System” often talked about in media?
The Election Commission of India gets the power to conduct elections from which of the following articles?
Which of the following statements is/are correct regarding the Payment of Wages Act, 1936?
I. The Act applies to employees earning wages above Rs...
With reference to the Panel of Chairpersons of Lok Sabha, consider the following statements:
1. Under the rules of Lok Sabha the Speaker nomina...
Trade Union Act came into force in:
The false statements among the following are:
I. A primary carbocation is less stable than a tertiary carbocation.
II. A cyclopropyl methy...
The distance between the pole and centre of curvature of a spherical mirror, in terms of its focal length f, is equal to:
ATL Sarthi mission is launched by which of the following institutions?
A alone can complete 40% of a work in 16 days while B takes 12 days more than A to complete it. If B and C together can complete the work in 20 days, th...
A train covers a distance of 72 km at the speed of 48 km/h the next 69 km distance covers with a speed of 46 km/h and last 54 km with the speed of 72 km...
