Laser light is harmful for the human eyes, because its intensity is very high. It can cause damage to the retina and lead to blindness. Hence, it is advisable not to look at a laser beam directly.
Atomic hydrogen atoms are produced by the dissociation of dihydrogen with the help of an electric arc. This releases a huge amount of energy (435.88 kJ mol–1 ). This energy...
The colour of light will not affect the shadow, because shadow is the dark patch formed when an object obstructs the path of light and hence no light reaches in...
The possible reason could be
(i) the bulb may be fused.
(ii) the cells may have been used up.
(iii) the cells are not placed in the correct order.
(iv) the switch is faulty....
Time taken by the laser beam to return to Earth after reflection from the Moon = 2.56 s
Speed of light = 3 × 108 m/s
Time taken by the laser beam to...
(i) (a) Two ways of creating awareness are:
Door to door campaigning.
Nukkad natak/any other methods
(b) Rain water harvesting: It is one of the most efficient method for recharging the underwater table....
