The image obtained on the screen of a pin-hole camera bec...
The image obtained on the screen of a pin-hole camera becomes less sharply defined when the
object is moved farther from the pin-hole
screen is moved farther from the pin-hole
object is made smaller
illumination is made more intense
pin-hole is made larger.
Correct answer is E
No explanation has been provided for this answer.
Which of the following quantities are dimensionally independent? I. Dielectric constant  ...
A hygrometer is an instrument used to measure ...
An object is projected with a velocity of 100m-1 at an angle of 60° to the vertical. Calculate t...
The molecular structure of a liquid is such that ...