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LED (Light Emitting Diode) lamps are promoted throughout the country to save energy. The LED bulb uses one-tenth energy as an incandescent bulb and half as much as a CFL to produce the same amount of light. According to the Energy Efficiency Services Ltd, the UJALA scheme that aims to replace incandescent bulbs with LEDs could save 5,905 MW in power generation. This translates to an annual savings of Rs. 4,000 for an average family due to efficiency gains and lower replacement costs.
What is the power of a lens whose focal length is 1 m?
The waves which are less than 20Hz are known as
What is the descending order of these radiations based on their frequencies?
What term describes the rate of change of velocity?
What device is primarily used to convert alternating current (AC) into direct current (DC)?
A bus moving along a circular track is an example of
The motion of a freely falling body is an example of ______________ accelerated motion.
Pulsars are :
Photovoltaic cells are:
What type of image is always formed by a convex mirror?
