1
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
A particle of mass M is situated at the centre of a spherical shell of same mass and radius a. The magnitude of the gravitational potential at a point sutuated at a/2 distance from the centre, will be :
A
$${{GM} \over a}$$
B
$${{2GM} \over a}$$
C
$${{3GM} \over a}$$
D
$${{4GM} \over a}$$
2
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
The dimension of $${1 \over 2}{\varepsilon _0}{E^2}$$, where $${\varepsilon _0}$$ is permittivity of free space and E is electric field, is
A
ML2T$$-$$2
B
ML$$-$$1T$$-$$2
C
ML2T$$-$$1
D
MLT$$-$$1
3
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
A ball is dropped from a high rise platform at t = 0 starting from rest. After 6 seconds another ball is thrown downwards from the same platform with a speed v. The two balls meet at t = 18 s. What is the value of v?
(Take g = 10 m/s2)
A
75 m/s
B
55 m/s
C
40 m/s
D
60 m/s
4
AIPMT 2010 Prelims
MCQ (Single Correct Answer)
+4
-1
Six vectors, $$\overrightarrow a $$ through $$\overrightarrow f $$ have the magnitudes and directions indicated in the figure. Which of the following statements is true ?

AIPMT 2010 Prelims Physics - Motion in a Plane Question 14 English
A
$$\overrightarrow b + \overrightarrow c = \overrightarrow f $$
B
$$\overrightarrow d + \overrightarrow c = \overrightarrow f $$
C
$$\overrightarrow d + \overrightarrow e = \overrightarrow f $$
D
$$\overrightarrow b + \overrightarrow e = \overrightarrow f $$