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AAI ATC Mock Test 2021
- Quantization of electric charge is demonstrated by
A.Millikans oil drop experiment
B. Thompson experiement
C. Rutherford alpha-ray scattering experiment
D. Stem – Gerlach experiment
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: A [/su_spoiler]
2. In cold season when lakes freeze only the top water freezes. Below this layer does not freeze and the aquatic life survives. This happens because of
A. Poor thermal conductivity of ice
B. Density of water is maximum at 4 degree Celcius
C. Heat Convection does not take place in water
D. Low latent heat of fusion of water
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
3. A liquid drop acquire spherical shape due to?
A. Gravity
B. Surface tension
C. Viscocity
D. Intermolecular interaction
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
4. In an orbital motion, the angular momentum vector is?
A. Along the radius vector
B. Parallel to the linear momentum
C. In the orbital plane
D. Perpendicular to the orbital plane
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: D [/su_spoiler]
5. The working principle of pressure gauges for measuring static pressure of a fluid flowing in a pipe is based on?
A. Poiseuille’s law
B. Bernoulli’s theorem
C. Stokes law
D. Hookes law
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
6. A carona aound the moon is seen when we view it on a fogy night, This is due to the?
A. Diffraction pattern of air born water droplets
B. Dispersion of light by air born water droplets
C. Scattering of light by air born water droplets
D. Formation of diffused image of moon.
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: A [/su_spoiler]
7. A liquid drop acquires spherical shape due to?
A. Gravity
B. Surface tension
C. Viscosity
D. Inter molecular Interaction
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
8. A double-slit experiment is performed with light of wavelength of 500 nm. A thin film of thickness 2 µm and refractive index 1.5 is introduced in the path of the upper beam. The location of the central maximum will?
A. Remain Unshifted
B. Shift downwards by nearly two frings
C. Shift upwards by nearly two frings
D. Shift downwards by 10 frings
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
9. The product of generalized coordinates and it’s conjugates momentum has the dimension of?
A. Force
B. Energy
C. Liner momentum
D. Angular momentum
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: D [/su_spoiler]
10. Gauss forward interpolation formula involves?
A. Even differences above the central line and odd differences on the central line
B. Odd differences above the central line and odd differences on the central line
C. odd differences above the central line and even differences on the central line
D. even differences above the central line and even differences on the central line
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: C [/su_spoiler]
11. In dual simplex method leaving variable position is positive after the iteration, then it’s in next iteration or in some later iterations, the variable occupying the place of this variable in the table?
A. Can become negative
B. Cannot become negative
C. Will always become negative
D. Will always equals to zero
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: A [/su_spoiler]
12. From given options, Choose the word similar in the meaning to the word in capital letter?
TRANSITORY
A. Unstable
B. Illusory
C. Short – Lived
D. Unreal
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: C [/su_spoiler]
13. From the given options, choose the word similar in meaning to the word in capitter letter?
BELITTLE
A. Demolish
B. Demean
C. Disaaprove
D. Blame
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
14. From the given options, choose the word opposite in meaning to the word in capitter letter?
FLEXIBLE
A. Rough
B. Rigid
C. Blunt
D. Reliable
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
15. Given four alternative, Choose the Which is substituted for the given word/sentence?
The custom of having more than one wife at the same time
A. Monogamy
B. Matrimony
C. Bigamy
D. Polygamy
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: D [/su_spoiler]
16. if the universal gravitational constant were decreasing with time, then satellite in orbit would still maintain it’s?
A. Orbital radius
B. Angular momentum
C. Tangential speed
D. Period of revolution
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
17. The velocity with which a projectile must be fired so that it escapes earth graviation does not depend on?
A. Mass of the earth
B. Mass of the projectile
C. Radius of the orbit
D. Gravitional constant
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
18. The second law of thermodynamics introduces the concepts of?
A. heat
B. Temperature
C. Entropy
D. Internal energy of the system
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: C [/su_spoiler]
19. The manisfestationof band structure in solids in a consequences of?
A. Heisenberg’s uncertainity principle
B. Pauli’s exclusion principle
C. Bohr’s corresponding principle
D. Ohm’s law
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: B [/su_spoiler]
20. Quantization of electric charge is demostrated by
A. Millikan’s oild drop expriment
B. Thompson experiment
C. Rutherford alpha-ray scattering experiement
D. Stem-Gerlach experiment
[su_spoiler title=”Answer” style=”fancy” icon=”plus-square-1″] Answer: A [/su_spoiler]
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