Explanation:
The statement has the essence of quantum theory which postulates that both the position and momentum cannot be precisely measured at the same instant. This is called Uncertainty Principle. An associated error always exists in either or both. Hence behavior of complex systems becomes much more difficult to analyse and impossible to predict.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The equivalent resistance between x and y in the circuit shown is
|
(a) 10 W |
(b) 40 W |
(c) 20 W |
(d) |
A railway compartment is lit up by thirteen lamps each taking 2.1 amp at 15 volts. The heat generated per second in each lamp will be
|
(a) 4.35 cal |
(b) 5.73 cal |
(c) 7.5 cal |
(d) 2.5 cal |
Which of the following has negative temperature coefficient of resistance
|
(a) Copper |
(b) Aluminium |
(c) Iron |
(d) Germanium |
The focal length of a combination of lenses formed with lenses having powers of + 2.50 D and – 3.75 D will be
|
(a) – 20 cm |
(b) – 40 cm |
(c) – 60 cm |
(d) – 80 cm |
Hydrogen atom excites energy level from fundamental state to n = 3. Number of spectrum lines according to Bohr, is
|
(a) 4 |
(b) 3 |
(c) 1 |
(d) 2 |
A convex lens has 9 cm focal length and a concave lens has – 18 cm focal length. The focal length of the combination in contact will be
|
(a) 9 cm |
(b) – 18 cm |
(c) – 9 cm |
(d) 18 cm |
