1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

The terminal velocity of a copper ball of radius 5 mm falling through a tank of oil at room temperature is 10 cm s$$-$$1. If the viscosity of oil at room temperature is 0.9 kg m$$-$$1 s$$-$$1, the viscous drag force is :

A
4.23 $$\times$$ 10$$-$$6 N
B
8.48 $$\times$$ 10$$-$$3 N
C
8.48 $$\times$$ 10$$-$$5 N
D
4.23 $$\times$$ 10$$-$$3 N
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

In a gravitational field, the gravitational potential is given by, $$V = - {K \over x}$$ (J/Kg). The gravitational field intensity at point (2, 0, 3) m is

A
$$ + {K \over 4}$$
B
$$ + {K \over 2}$$
C
$$ - {K \over 2}$$
D
$$ - {K \over 4}$$
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

The percentage error in the measurement of g is : (Given that $$g = {{4{\pi ^2}L} \over {{T^2}}}$$, $$L = (10\, \pm \,0.1)$$ cm, $$T = (100\, \pm \,1)$$ s)

A
7%
B
2%
C
5%
D
3%
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

Two very long, straight, parallel conductors A and B carry current of 5 A and 10 A respectively and are at a distance of 10 cm from each other. The direction of current in two conductors is same. The force acting per unit length between two conductors is : ($$\mu$$0 = 4$$\pi$$ $$\times$$ 10$$-$$7 SI unit)

A
1 $$\times$$ 10$$-$$4 Nm$$-$$1 and is repulsive
B
2 $$\times$$ 10$$-$$4 Nm$$-$$1 and is attractive
C
2 $$\times$$ 10$$-$$4 Nm$$-$$1 and is repulsive
D
1 $$\times$$ 10$$-$$4 Nm$$-$$1 and is attractive
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