An astronomical telescope has objectives and eye-piece le...
An astronomical telescope has objectives and eye-piece lenses of focal length 3.5m and 5cm respectively. Determine the magnifying power of the telescope when in normal adjustment
70.0
17.5
7.0
0.7
Correct answer is A
Magnify power = \(\frac{f_o}{f_e}\)
= \(\frac{3.5 \times 100}{5.0}\)
= 70
After three half lifes, the fraction of a radioactive material that has decayed is ...
A freshly demagnetized bar magnet is placed in the East-West direction to ensure that ...
Two capacitors, each of capacitance 2\(\mu\)F are connected in parallel. If the p.d across them...
An object is projected with a velocity of 50ms-1 from ground level at an angle θ to the vertic...