NEET Physics: Questions 1409 - 1413 of 2099
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Question number: 1409
A beaker contains 400 gm of water. The heat capacity the beaker is equal to that of 20 gm of water. The initial temperature of water in the beaker is 20°C. If 240 gm hot water at 92°C is poured in it, the final temperature (neglecting radiation loss) will be nearest to
Question number: 1410
Radius of a capillary tube is 4 × 10 -3 m. A liquid of weight 5.20 × 10 -4 N may remain in the capillary tube then the surface tension of liquid will be
2.3 × 10 -2 N/m
2.0 × 10 -2 N/m
20 × 10 -3 N/m
Question number: 1411
When fluids are heated from the bottom, convection currents are produced because
Heated fluid becomes less dense than the cold fluid above it
Molecular motion of fluid becomes aligned
Heated fluid becomes more dense than the cold fluid above it
Molecular collisions take place within the fluid
Question number: 1412
Question number: 1413
No interference pattern is detected when two coherent sources are infinitely close to each other.
The fringe width is directly proportional to the distance between the two slits.
|a.||Ꭺ is true but Ꭱ is false|
|b.||Both Ꭺ and Ꭱ are false|
|c.||Ꭺ is false but Ꭱ is true|
|d.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|