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Explain the term 'work function' of a metal. The threshold frequency of a metal is f0. When the light of frequency 2f0 is incident on the metal plate, the maximum velocity of electrons emitted is v1. When the frequency of the incident radiation is enhanced to 5f0, the maximum velocity of electrons emitted is v2. Find the ratio of v1 to v2.
It is worth noting that positive charges have lines of forces moving out from them and negative charges have lines of forces entering them.for attraction of charges one charge must
A coil of inductance 100 mH and resistance 800Ω is connected in parallel with a variable capacitor across a 12V, 5kHz supply. Determine for the condition when the supply curre
write a short note on terrestrial telescope
Centrifugal force with a liquid Get a small goldfish bowl or glass jar. Fasten a wire securely about the neck. To this wire attach a bale. Join the cord from the drill chuck to
The units that may be derived from fundamental units are known as derived units.
Materials are an essential part of an engineering study. An engineer requires materials to provide shape to his concept and design. Selection of the right material job in the first
why the condition of maxima is changed in thin films
impure and pure spectrum
The most malleable, ductile low resistivity material is (A) Copper. (B) Aluminium. (C) Silver. (D) Iron. Ans: The most malleable, ductile low resistivity mater
Advantages of high transmission voltage A) Decreases volume of conductor material: B) Enhance in transmission efficiency C) Reduces percentages line drop
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