The pin-hole camera produces a less sharply defined image...
The pin-hole camera produces a less sharply defined image when the
pin-hole is larger
illumination is less
screen is further from the pin-hole
object is further from the pin-hole
Correct answer is A
- a less sharp or blurred image is due to increased brightness
- increase brightness is also due to large hole or many pin holes
When electrical power is transmitted over long distances, the voltage is stepped up so that ...
Viscosity in a liquid does not depend on the ...
An object is heated from 30°C to 57°C. The increase in its temperature on the Kelvin scale i...
The area under a velocity-time graph represents ...
How far will a body move in 4 seconds if uniformly accelerated from rest at the rate of 2 ms-2?...
Calculate the amount of heat generated in an external load of resistance 8Ω if an alternating ...