1
WB JEE 2008
+1
-0.25

A particle is projected vertically upwards and is at a height h after t1 seconds and again after t2 seconds then

A
$$h = g{t_1}{t_2}$$
B
$$h = {1 \over 2}g{t_1}{t_2}$$
C
$$h = {2 \over g}{t_1}{t_2}$$
D
$$h = \sqrt {g{t_1}{t_2}}$$
2
WB JEE 2009
+1
-0.25

The equation of the tangent to the conic $${x^2} - {y^2} - 8x + 2y + 11 = 0$$ at (2, 1) is

A
x + 2 = 0
B
2x + 1 = 0
C
x + y + 1 = 0
D
x $$-$$ 2 = 0
3
WB JEE 2009
+1
-0.25

A particle is moving in a straight line. At time t, the distance between the particle from its starting point is given by x = t $$-$$ 6t2 + t3. Its acceleration will be zero at

A
t = 1 unit time
B
t = 2 unit time
C
t = 3 unit time
D
t = 4 unit time
4
WB JEE 2009
+1
-0.25

The Rolle's theorem is applicable in the interval $$-$$1 $$\le$$ x $$\le$$ 1 for the function

A
f(x) = x
B
f(x) = x2
C
f(x) = 2x3 + 3
D
f(x) = |x|
WB JEE Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
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