NEET Physics: Questions 1246 - 1250 of 2099
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Question number: 1246
Question number: 1247
A large soap bubble expands while a small bubble shrinks, when they are connected to each other by capillary tube.
The excess pressure inside bubble (or drop) is inversely proportional to the radius.
|a.||Ꭺ is false but Ꭱ is true|
|b.||Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ|
|c.||Both Ꭺ and Ꭱ are false|
|d.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|
Question number: 1248
Water is filled in a cylindrical container to a height of 3m. The ratio of the cross-sectional area of the orifice and the beaker is 0.2. The square of the speed of the liquid coming out from the orifice at height 0.525 is, (g = 10m/s 2)
50.64 m 2 /s 2
52.43. m 2 /r
51.56 m 2 /s 2
50.55 m 2 /s 2
Question number: 1249
Question number: 1250
In an experiment similar to Young’s experiment, interference is observed using waves associated with electrons. The electrons are being produced in an electron gun. In order to decrease the fringe width,
(1) Electron gun voltage be increased.
(2) The slits be moved away from each other
(3) The screen be moved closer to interfering slits.
(4) Electron gun voltage be decreased.
Select the correct answers and mark it according to the following codes:
1 and 2 are correct
2 and 4 are correct
1 and 3 are correct
1, 2 and 3 are correct