An object is placed 10cm from a converging lens of foal l...
An object is placed 10cm from a converging lens of foal length 15cm. Calculate the magnification of the image formed
3.0
1.5
0.6
0.3
Correct answer is C
* produces a virtual image when object distance(u) is less than its focal length(f).
1f=1u−1v
1v=1f+1u
115+110=2+330
1v=530
v = 6.0 cm
but m = vu=610=0.6
Note that the negative sign only shows the placement of the image. It has no effect on the magnification basically.
Which of the following statements about the universal gravitational constant, G, is true? ...
Which of the following is/are TRUE of nuclear fission? I. A heavy nucleus is split into two nucl...
A tap supplies water at 26°C while another supplies water at 82°C. If a man wishes to bathe ...
All the heat generated by a current of 2A passing through a resistor of 6Ω for 2.5s is used to...
A drop of petrol makes a finger colder than a drop of water would because? ...
Which of the following features is NOT a characteristic of natural radioactivity? ...