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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.
Car travelling 60 km per hour Overtakes another car travelling at 42km per hour. Asuming each car to be 5metre long . Find totoal time taken during the Overtake. and road distance.
Draw the phasor diagram for an ideal transformer on no-load. (a) A 500 V/100V, single-phase transformer takes a full load primary current of 4A. Neglecting losses, Verify
Ask question #A sprinter runs 100.0 m. If he travels at constant acceleration of 1.95 m/s2 for the first 6.00 s, and then at constant velocity for the remaining time, what was his
With the help of a bb diagram, define the principle of an optical communication system. Give its two advantages over cable communication system
if electrons are moving from east to west in a conductor is there a flow of current?
Adding 3 Vectors A simple demonstration of adding 3 vectors graphically. Also elaborates in which vector addition is relative.
Question: For a plane mirror that is true of the normal? Feedback: The usual is an imaginary line that passes through the point of incidence and is perpendicular to
Volt; V (after A. Volta, 1745-1827) The derived SI unit of electric potential, explained as the difference of potential among two points on a conductor carrying a constant cur
state biot savart law and hence calculate magnetic induction due to current in a circular coilof wire at a point on its axias
does lights of different wavelengths help us to see different colour
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