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?

Similar Questions

A machine of efficiency 8% is used to raise a body of mass 75kg through a vertical height of 3m in 3...

A stand-by generator is connected to fifteen 40 W lamps and musician's 600 W amplifying system. ...

When two cells of negligible internal resistances and equal e.m.f. denoted by E$_1$ and E\(_2...

What is the difference in the amount of heat given out by 4kg of steam and 4kg of water when both ar...

It is easier to roll a stone up a sloping road than to lift it vertical upwards because ...

Which colour is deviated least when white light passes through a triangular prism? ...

the fig above shows displacement-time graphs for three different motions. which of the following sta...

The boiling point of a liquid depends on the following except the ...

The resistance of an open series circuit is ...

The period of a simple pendulum X is 5s. What is the period of a simple pendulum Y which makes 50 vi...