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Making an observation nest for ants
An observation nest for the study of the life story of ants can simply be made as follows.
Make a wooden U from three 30 cm lengths of wood 1.5 cm square. Mount this vertically in a suitable wooden base. Now cut rectangles of glass 30 cm x 33 cm and clamp them on every side of the U with rubber bands or some sort of metal clip
The neutrons and protons in a stable nucleus are held together by nuclear forces and energy is required to pull them infinitely apart (or the similar energy is released during the
Understand the manufacturing technique of optical fibres by using chemical vapour deposition method. A Traversing oxy-hydrogen flame heats the reaction zone to a temperature ar
Q. Distinguish between interference and diffraction fringes? Interference Diffraction 1) It is because of the superposition of secon
An object starts from point A and moves with constant acceleration in a straight line. 5 seconds after the start, it crosses point B, and 7 seconds after the start it crosses poin
Where do you find the null points in the combined field due to the earth and a bar magnet, when i) the N-pole of the magnet is taken towards the north of the earth, ii) the
A 100V battery is linked across a resistor and causes a current of 5mA to ?ow. Verify the resistance of the resistor. If the voltage is now decreased to 25V, what will be t
Explain the absorption and emission transitions of A and B coefficients of Einstein. Assume that N 1 and N 2 be the number of atoms per unit volume along with energy E 1 and
Describe NOR and NAND gates. Provide their truth tables. Discuss the nature of a p-n junction. How does a potential barrier develop at the junction.
Working of Current Time base generator
At a distance of 4,000 ft from the launch site, a spectator is observing a rocket being launched. If the rocket lifts off vertically and is rising at a speed of 600 ft/sec when it
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