|
A U-tube contains water and methylated spirit separated by mercury
|
|
1
|
5419
|
December 24, 2016
|
|
Compute the force necessary to keep the door close
|
|
1
|
788
|
December 24, 2016
|
|
Why do the vessels filled with water to that same height give different readings on a weighing scale?
|
|
1
|
1733
|
December 24, 2016
|
|
What maximum pressure would the smaller piston have to bear?
|
|
1
|
747
|
December 24, 2016
|
|
If the required pressure in the tyre of a car
|
|
1
|
3435
|
December 24, 2016
|
|
A container of area 0.02 ${{m}^{2}}$ is 'filled with water
|
|
1
|
2502
|
December 24, 2016
|
|
What is the pressure on a swimmer 10 m below the surface of a lake
|
|
0
|
1885
|
December 23, 2016
|
|
A balloon with hydrogen in it rises up
|
|
1
|
1397
|
December 23, 2016
|
|
A 50 kg girl wearing high heels, shoes balances on a single heel
|
|
1
|
1437
|
December 23, 2016
|
|
Distinguish between conduction, convection and radiation
|
|
0
|
13379
|
December 23, 2016
|
|
Explain why a body with large reflectivity is a poor emitter
|
|
1
|
5538
|
December 23, 2016
|
|
Explain the following Hot tea cool rapidly when poured into the saucer from the cup
|
|
1
|
4070
|
December 23, 2016
|
|
Two vessels A and B of different materials but having identical shape
|
|
1
|
3925
|
December 23, 2016
|
|
On a hot day, a car is left in sunlight with all the windows closed
|
|
1
|
3203
|
December 23, 2016
|
|
A piece of paper wrapped tightly on a wooden rod
|
|
1
|
2111
|
December 23, 2016
|
|
Woolen clothes are warm in winter. Why?
|
|
0
|
893
|
December 23, 2016
|
|
The earth constantly receives heat radiation from the sun and gets warmed up. Why does the earth not get as hot as the sun?
|
|
0
|
1216
|
December 23, 2016
|
|
How does tea in a thermo flask remain hot for a long time?
|
|
0
|
4147
|
December 23, 2016
|
|
If a drop of water falls on a very hot iron, it does not evaporate for a long time. Give reason
|
|
0
|
4427
|
December 23, 2016
|
|
Why it is much hotter above afire than by its side?
|
|
0
|
2124
|
December 23, 2016
|
|
Why rooms are provided with the ventilators near the roof?
|
|
0
|
5588
|
December 23, 2016
|
|
Two thermos flasks are of the same height and same capacity
|
|
1
|
2344
|
December 23, 2016
|
|
What kind of thermal conductivity and specific heat requirements would you specify for cooking utensils?
|
|
0
|
9338
|
December 23, 2016
|
|
In a coal fire, the pockets formed by coals appear brighter than the coals themselves
|
|
1
|
2589
|
December 23, 2016
|
|
Why birds are often seen to swell their feathers in winter?
|
|
0
|
4476
|
December 23, 2016
|
|
Place a safety pin on a sheet of paper
|
|
1
|
903
|
December 23, 2016
|
|
Why water is preferred to any other liquid in the hot water bottles?
|
|
0
|
1797
|
December 23, 2016
|
|
Can we boil water inside in the earth satellite?
|
|
0
|
2456
|
December 23, 2016
|
|
White clothes are more comfortable in summer while colourful clothes are more comfortable in winter. Why?
|
|
0
|
1773
|
December 23, 2016
|
|
The triple point of water is a standard fixed point in modem thermometry
|
|
1
|
2006
|
December 23, 2016
|