The shape of a spot of light produced when brigh...

To see other biotech frequently asked questions, please visit http://biotech.fyicenter.com/faq/

(Continued from previous question...)

The shape of a spot of light produced when bright sunshine passes perpendicular through a hole of very small size is

(a) Square, because the hole is a square
(b) Round, because it is an image of the sun
(c) Round with a small penumbra around it
(d) Square with a small penumbra



(b) Round, because it is an image of the sun

(Continued on next question...)

Other Frequently Asked Questions

• An electron is injected into a region of uniform magnetic flux density with the components of velocity parallel to and normal to the flux. What is the path of the electron?
• A certain radioactive element A, has a half life = t seconds. In (t/2) seconds the fraction of the initial quantity of the element so far decayed is nearly
• If the sum of the roots of the equation ax2 + bx + c=0 is equal to the sum of the squares of their reciprocals then a/c, b/a, c/b are in
• If a ground is rectangular, what is its width?
• What technique is used to measure the number of copies of a gene or an RNA molecule in human tissues?
• Which of the following is most acidic?
• All toffees are chocolates. Some toffees are not good for health.
• The rate of the first order reaction depends on the
• If “segment” is coded as rffndou, then “ritual” is coded as
• Computational Biology (3)
• More...