# The terminal velocity of a copper ball of radius $$5~\text{mm}$$ falling through a tank of oil at room temperature is $$10~\text{cm}~\text{s}^{-1}$$ . If the viscosity of oil at room temperature is $$0.9~\text{kg}~\text{m}^{-1}~\text{s}^{-1}$$, the viscous drag force is: 1. $$8.48 \times10^{-3}$$ N 2. $$8.48 \times10^{-5}$$ N 3. $$4.23 \times10^{-3}$$ N 4. $$4.23 \times10^{-6}$$ N

Subtopic:  Stokes' Law |
64%
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NEET - 2022
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If $$\vec F=2\hat i+\hat j-\hat k$$ and $$\vec r=3\hat i+2\hat j-2\hat k,$$ then the scalar and vector products of $$\vec F$$ and $$\vec r$$ have the magnitudes, respectively, as:
1.  $$5, ~\sqrt3$$
2.  $$4,~ \sqrt5$$
3.  $$10, ~\sqrt2$$
4.  $$10,~2$$
Subtopic:  Vector Product |
75%
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NEET - 2022
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After passing through a polarizer, a linearly polarized light of intensity $$I$$ is incident on an analyser making an angle of $$30^\circ$$ with the axes of the polariser. The intensity of light emitted from the analyser will be:
 1 $$\frac{I}{2}$$ 2 $$\frac{I}{3}$$ 3 $$\frac{3I}{4}$$ 4 $$\frac{2I}{3}$$
Subtopic:  Polarization of Light |
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NEET - 2022
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The restoring force of a spring, with a block attached to the free end of the spring, is represented by:

 1 2 3 4
Subtopic:  Spring mass system |
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NEET - 2022
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If the screen is moved away from the plane of the slits in Young's double slit experiment, then the:
 1 angular separation of the fringes increases. 2 angular separation of the fringes decreases. 3 linear separation of the fringes increases. 4 linear separation of the fringes decreases.
Subtopic:  Young's Double Slit Experiment |
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NEET - 2022
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The effective capacitances of two capacitors are $$3~\mu \text{F}$$ and $$16~\mu \text{F}$$, when they are connected in series and parallel respectively. The capacitance of two capacitors are:
 1 $$10 ~\mu \text{F}, ~6~\mu \text{F}$$ 2 $$8 ~\mu \text{F}, ~8~\mu \text{F}$$ 3 $$12~\mu \text{F},~ 4~\mu \text{F}$$ 4 $$1.2~\mu \text{F},~1.8~\mu \text{F}$$
Subtopic:  Combination of Capacitors |
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NEET - 2022
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The distance covered by a body of mass $$5$$ g having linear momentum $$0.3$$ kg-m/s in $$5$$ s is:
1. $$300$$ m
2. $$30$$ m
3. $$3$$ m
4. $$0.3$$ m
Subtopic:  Newton's Laws |
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NEET - 2022
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A gravitational field is present in a region and a mass is shifted from $$A$$ to $$B$$ through different paths as shown. If $$\mathrm{W_1}$$, $$\mathrm{W_2}$$ and $$\mathrm{W_3}$$ represent the work done by the gravitational force along their respective paths, then:
 1 $$\mathrm{W}_1=\mathrm{W}_2=\mathrm{W}_3$$ 2 $$\mathrm{W}_1>\mathrm{W}_2>\mathrm{W}_3$$ 3 $$\mathrm{W}_1>\mathrm{W}_3>\mathrm{W}_2$$ 4 $$\mathrm{W}_1<\mathrm{W}_2<\mathrm{W}_3$$
Subtopic:  Gravitational Potential Energy |
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NEET - 2022
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The reciprocal of resistance is:
 1 reactance 2 mobility 3 conductivity 4 conductance
Subtopic:  Derivation of Ohm's Law |
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NEET - 2022
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Given below are two statements:
 Assertion (A): When a firecracker (rocket) explodes in mid-air, its fragments fly in such a way that they continue moving in the same path, which the firecracker would have followed, had it not exploded. Reason (R): Explosion of cracker (rocket) occurs due to internal forces only and no external force acts for this explosion.

 1 Both (A) and (R) are true and (R) is the correct explanation of (A). 2 Both (A) and (R) are true but (R) is not the correct explanation of (A). 3 (A) is true but (R) is false. 4 (A) is false but (R) is true.
Subtopic:  Collisions |
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NEET - 2022
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