1
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of the earth. Then,
A
the linear momentum of S remains constant in magnitude.
B
the acceleration of S is always directed towards the centre of the earth.
C
the angular momentum of S about the centre of the earth changes in direction, but its magnitude remains constant.
D
the total mechanical energy of S varies periodically with time.
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
The value of coefficient of volume expansion of glycerin is 5 $$ \times $$ 10$$-$$4 K$$-$$1. The fractional change in the density of glycerin for a rise of 40oC in its temperature, is
A
0.025
B
0.010
C
0.015
D
0.020
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
The cylindrical tube of a spray pump has radius R, one end of which has n fine holes, each of radius r. If the speed of the liquid in the tube is V, the speed of the ejection of the liquid through the holes is
A
$${{VR{}^2} \over {{n^3}{r^2}}}$$
B
$${{{V^2}R} \over {nr}}$$
C
$${{V{R^2}} \over {{n^2}{r^2}}}$$
D
$${{V{R^2}} \over {n{r^2}}}$$
4
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
Water rises to a height h in capillary tube. If the length of capillary tube above the surface of water is made less than h, then
A
water rises upto a point a little below the top and stays there.
B
water does not rise at all.
C
water rises upto the tip of capillary tube and then starts overflowing like a fountain.
D
water rises upto the top of capillary tube and stays there without overflowing.
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