A source of light is placed at a distanc...

A source of light is placed at a distance of 50 cm from a photo cell and the stopping Potential is found to be `V_0`. If the distance between the light surface and photo cell is made 25 cm, the new stopping potential will be

`V_0`

`(V_0)/2`

`V_0`

`4V_0`

Text Solution

Verified by Experts

Topper's Solved these Questions

MODEL QUESTION PAPER 6
SARAS PUBLICATION|Exercise EXERCISE|45 Videos

Similar Questions

Explore conceptually related problems

A point source of light is placed at a distance of 2f from a converging lens of focal length f. The intensity on the other side of the lens is maximum at a distance

An object 2.5 cm high is placed at a distance of 10 cm from a concave mirror of radius of curvature 30 cm. The size of the image is

A 5 cm high object is placed at a distance of 25 cm from a converging lens of focal length of 10 cm. Determine the position, size and type of the image.

A monochromatic source of light is placed at a distance d from a metal surface photoelectrons are ejected at n, kinetic energy being E. If the source is brought nearer to distance d/2 . The rate and kinetic energy per photo electron becomes nearly

A photographic plate placed at a distance of 5 cm from a weak point source is exposed for 3 s. If the plate is kept at a distance of 10 cm from the source, the time needed for the same exposure is

A point source of monochromatic light of 1.0 mW is placed at a distance of 5.0 m from a metal surface. Light falls perpendicularly on the surface. Assume wave theory of light to hold and also that all the light falling on the circular area with radius =1.0 xx 10^-9m (which is few times the diameter of an atom) is absorbed by a single electron on the surface. Calculate the time required by the electron to receive sufficient energy to come out of the metal if the work function of the metal is 2.0eV .

An object is placed at a distance of 20.0 cm from a concave mirror of focal length 15.0 cm. (a) What distance from the mirror a screen should be placed to get a sharp image? (b) What is the nature of the image?

A certain metallic surface is illuminated with manochromatic light of wavelength , lambda . The stopping potential for photoelectric current for this light is 3V_0 . If the same surface is illuminated with light of wavelength 2lambda , the stopping potential is V_0 . The threshold wavelength for this surface for photoelectric effect is:

The work function for the surface of aluminium is 4.2 eV. What will be the wavelength of that incident light for which the stopping potential will be zero

A screen is placed a distance 40 cm away from an illuminated object. A converging lens is placed between the source and the screen and it is attempted to form the image of the source on the screen. If no position could be found, the focal length of the lens

SARAS PUBLICATION-OPTICS-EXAMPLE

A ray of light is incident at angle of incident ,I, on one face of a p...
Text Solution
|
A concave mirror of focal length ‘f1' is placed at a distance‘d’ from...
Text Solution
|
A source of light is placed at a distance of 50 cm from a photo cell ...
Text Solution
|
Two plane mirrors are inclined at 70^@. A ray incident on one mirror a...
Text Solution
|
The reddish appearance of rising and setting sun is due to
Text Solution
|
In Young 's double slit experiment the distance between the slits and ...
Text Solution
|
Ratio of longest wavelength corresponding to Lyman and Baimer series i...
Text Solution
|
A Plano-convex lens fits exactly into a plano-concave lens. Three plan...
Text Solution
|
For a normal eye, provides a converging power of 40Dand the least conv...
Text Solution
|
A speeding motor cyclist sees traffic jam ahead of him. He slows dow...
Text Solution
|
Light with an energy flux of 25xx10^4 Wm^-2 falls on a perfectly refl...
Text Solution
|
A beam of light of wavelenght 600 nm from a distant source falls on a ...
Text Solution
|
In the young,s double -slit experiment ,the intensity of light at a po...
Text Solution
|
If the focal lenghth of objective lens is increased then magnifying po...
Text Solution
|
If the kinetic energy of a particle is increased by 16 times, the perc...
Text Solution
|
The refracting angle of a prims is A,and refraction index of the mate...
Text Solution
|
Two identical thin planoconvex glass lenses{refractive index 1.5) each...
Text Solution
|
At the first minimum adjacent to the central maximum ofa single-slit d...
Text Solution
|
The coefficient of performance of a refrigerator is 5. If the temperat...
Text Solution
|
Two slits in Young's experiment have widths in the ratio 1:25 The rati...
Text Solution
|