by Sunday | Nov 12 | Physics JAMB
A. cathode ray B. anode ray C. molecular ray D. gamma-ray Correct Answer: Option A – cathode ray Explanation The ray which causes gas molecules to fluoresce or glow is the cathode rays
by Sunday | Nov 12 | Physics JAMB
A. ions only B. electrons and ions C. electrons and holes D. electrons only Correct Answer: Option B – electrons and ions Explanation The electrons and cations of ionized gas act as charge carriers.
by Sunday | Nov 12 | Physics JAMB
A. V B. III C. I D. II Correct Answer: Option A – V Explanation Silicon is a tetravalent (4 valent) element, and in order to produce an n-type semi-conductor, it has to be dropped with a pentavalent (5valent)element, that, that is element in group five...
by Sunday | Nov 12 | Physics JAMB
A. increases then decrease B. increases C. decreases D. remains constant Correct Answer: Option B – increases Explanation When impurities are added to the semi-conductor, the semi-conductor is said to be doped and increases the conductivity of the...
by Sunday | Nov 12 | Physics JAMB
A. 250days B. 150days C. 300days D. 200days Correct Answer: Option A – 250days Explanation Since 1/32, is the fraction left of any radioactive material after 5half lives, that is: 1/32= (1/2)5. Thus if a half-life is 50 days, 5 half-lives will be 50 x 5= 250...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.