a point source causes photoelectric effect from a small metal plate. which of the following curves may represent the saturation photocurrent as a function of the distance between the source and the metal?
as the distance between the source and the metal is increased, the intensity of light decreases becausealso, the photocurrent is directly proportional to the intensity of light and also to the number of electrons emitted.hence, the curve d is the appropriate curve representing above equation.
&nbsp;an electron enters uniform electric field maintained by parallel plates and of value 'e' &nbsp; v m-1 with a velocity ' v ' ms-1.&nbsp;the plates are separated by a distance 'd' metre. what is the acceleration of the electron in the field?&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Solution


![image](https://q2a.s3.us-west-1.amazonaws.com/prod/answer-four-long-current-carrying-wires-planeintersect-form-square-side-lengths.jpeg)  

![image](https://q2a.s3.us-west-1.amazonaws.com/prod/answer-four-long-current-carrying-wires-planeintersect-form-square-side-lengths-1.gif) an equivalent current source in parallel with an equivalent impedance in the figure below, the angle  is shown in the standard position where the point  is on the terminal side of , and  is the distance from the origin to . 

if  is the distance from the origin to  then the trigonometric function of  are
  
  
     
therefore, the trigonometric functions are , , and . we are required to state the effect of one of the laws governing brightness. apparent brightness:b=l4πd2 where b is apparent brightness, l is intrinsic luminosity, and d is the distance from the source. [readmore]as the distance increases, the apparent brightness gets fainter as the distance from the source increases. the fainting brightness is accounted for by the spreading out of photons: as light travels away from its source, the photons get spread out over increasingly greater areas. the more the light is spread out, the fainter it appears in any given patch of area (for example, the small patch of the area covered by the opening in your eye)the correct choice is:d. far from the source, photons spread over a larger area. Correct option is A) 9.378 m2


![](https://lh3.googleusercontent.com/-UueuqyijXPQ/YLtK0v0m9CI/AAAAAAAABro/xFcfQOQAOx8jHAtpqiORvW_8DRFX1yK3ACLcBGAsYHQ/image.png)


result must have significant figures equal to least figures being multiplid do area of metal sheet 9.378 m2  (four significant digits) hi there!we are asked to determine the process corresponding to the increase in entropy labeled 1 and 2.we can use the heating curve to answer the given questions. recall that entropy is the degree of chaos or disorder of a system. for a given process, entropy (δs) will either increase or decrease. also, phase changes lead to a change in entropy:• we know that the phase at the highest temperature is gas• the plot has 2 process with drastic increase in entropy.• increase in entropy accompanying phase change is from solid → liquid → gas• therefore, the phases in the graph must have been:• phase change from solid to liquid is called fusion or melting• phase change from liquid to gas is called vaporizationprocess 1 represents melting (fusion), and 2 represents vaporization. maybe the smoke is coming from your *** dear student,
kindly refer to the links given below for an answer to a similar
query :

https://www meritnation
com/ask-answer/question/graphically-representlongitudinal-wave-transverse-wave/sound/11089393


https://www meritnation
com/ask-answer/question/explain-briefly-about-longitudinal-wave-transverse/sound/9951933

hope this information will clear your doubts about topic
if you have any more doubts just ask here on the forum and our
experts will try to help you out as soon as possible

regards that's a bit of an ovary-action.