Which of the following is used for the correction of shor...
Which of the following is used for the correction of short sightedness?
convex lens
concave lens
convex mirror
concave mirror
Correct answer is B
Concave lens diverges parallel rays of light. A short sighted person has the image formed before the retina,and the rays have to be diverged so that they intersect to form image onto the retina
A constantan wire has a cross sectional area of 4 x 10-8m2 and a resistivity of 1.1 x 10-6Ω...
When a brick is taken from the earth's surface to the moon, its mass ...
Which of the following is not correct about the Rutherford’s model of an atom? ...
The instrument used in the measurement of atmospheric pressure is? ...