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15) A 60W eletric lamp gives off energy in the form of light at the rate of 7.5J/sec .What perentage of energy does the lamp transform into light energy ?
Which is the scale used to measure earthquake
10) A heater coil is rated 100W , 200V .If is cut into two identical parts. Both parts are connected together in parallel to the same source of 200V. Calculate the energy liberated per second in the new combination.
WHAT ALL THINK MUST PUT TO MAKE BUBBLE DO NOT POP
THE SMALL FILM
1) A heater joined in parallel with a 60W buld is connected to the mains . If the bulb is replaced by a 100W bulb will the rate of the heat produced by the heater remain same, increase or decrease.
what is the program used to make a os
WHAT IS CHAMICAL CONTROL
WHAT IS BIOLOGICAL CONTOL
WHAT IS MECHANICAL CONTROL
what is genetic engineering?
what is mean by area of the square
WHAT AER THE CONCAVE MIRROR
What is the significance of the terms 'isolated gaseous atom' and 'ground state', while defining the ionization enthalpy and electron gain enthalpy?
How would you explain deviation from the general trend in group 13?
all elements are not photoelectric? why?
why do many spectral lines are there even though only one e- in a hydrogen atom?
how does current flow through a solenoid when a magnet is moved inside it?
A bullect of mass 20gm moving with a speed of 120m/s enters a heavy wooden block and is stopped after a distance of 1.2m.What is the average resistive force?
A rectangular block of mass 25kg is pulled forward by a man with a force of 50N.Find the acceleration on the block a.When it is pulled horizotally{Neglect friction} b.When the string tied to the block makes an angle 30 degree with the horizontal. In the above question determine the reaction acting on the body by the floor in each case?