At what distance from a simple microscope must an object ...
At what distance from a simple microscope must an object be placed so that the image 5 times the size of the object is produced 20cm from the lens?
2cm
3.3cm
4cm
5cm
15cm
Correct answer is C
M=vu=5⇒v=5u=20,letubexv=5xifv=20then5x=20thereforex=20/5=4u=4cm
When a ray of light passes from water to glass, it is ...
The magnitude of the force experienced by a charge of 1.6 x 10−8C in a uniform electric field...
Which of the following statements are correct? i. land and sea breezes are natural convection cur...
Which of the following statements about kinetic theory of matter is not correct? ...
Using the circuit diagram above. Calculate the total charge in the circuit ...