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Define the terms threshold frequency and stopping potential in relation to the phenomenon of photoelectric effect. How is the photoelectric current affected on enhancing the
(i) frequency
(ii) intensity of the incident radiations and why?
Write an assembly program to make a microwave. Need: 1. The microwave has a clock (hh:mm:ss am/pm) and the user should be able to alter the clock at any time. 2. For c
Energy is transferred in a one direction only. Example : Wave propagating in a stretched string.
A force of 25 N is applied vertically at the end of a wrench handle that is 45 cm long to tighten a bolt in the clockwise direction. What torque is required by the bolt to keep the
Q. Dissimilarity between an intrinsic and extrinsic semiconductor? Answer:- Semiconductors permit only a little amount of light to pass through them. They are of two n-kin
How do I find the momentum, velocities and energy of both vehicles as they leave the impact point, the energy transferred during the collision and the momentum and energy of the ve
A 2.00 x 10 3 -g sample of water at 100.0°C is mixed with a 4.00 x 10 3 -g sample of water at 0.0°C in a calorimeter. What is the equilibrium temperature of the mixture?
A scooterist is racing at a speed of 72 km per hour. If the radius of the wheel is 20 cm, find the angular speed of the wheels. Ans) 72kmph=20m/s 20cm=0.2m; v=rw w=v/r w=20/0
Write any four characteristics of electromagnetic waves. Give two uses each of 1. Radio-waves 2. Micro-waves.
Consider the 4-f system below where an object is placed at the input plane and is illuminated by a plane wave With the object from part a) inserted in the input plane, a m
It is the area or region around the material where magnetic properties can be found is called as “magnetic field”.
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