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.
What is the effect of using split-rings in a simple d.c motor? ...
Which of the following statements about electrolysis is NOT correct? ...
Totally reflecting prisms are preferred to mirrors in periscopes because I. mirror givegive multi...
Which of the following statements is correct?...