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AAI ATC Mock Test 2023
- Quantization of electric charge is demonstrated by
A.Millikans oil drop experiment
B. Thompson experiment
C. Rutherford alpha-ray scattering experiment
D. Stem – Gerlach experiment
Answer: A
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 degrees Celcius
C. Heat Convection does not take place in water
D. Low latent heat of fusion of water
Answer: B
3. A liquid drop acquires a spherical shape due to?
A. Gravity
B. Surface tension
C. Viscosity
D. Intermolecular interaction
Answer: B
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
Answer: D
5. The working principle of pressure gauges for measuring the 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
Answer: B
6. A carona aound the moon is seen when we view it on a foggy 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.
Answer: A
7. A liquid drop acquires spherical shape due to?
A. Gravity
B. Surface tension
C. Viscosity
D. Inter molecular Interaction
Answer: B
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
Answer: B
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
Answer: D
10. What 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
Answer: C
11. In the dual simplex method leaving the 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
Answer: A
12. From the given options, Choose a word similar in meaning to the word in the capital letter.
TRANSITORY
A. Unstable
B. Illusory
C. Short – Lived
D. Unreal
b
13. From the given options, choose a word similar in meaning to the word in the capital letter.
BELITTLE
A. Demolish
B. Demean
C. Disaaprove
D. Blame
Answer: B
14. From the given options, choose the word opposite in meaning to the word in capital letters.
FLEXIBLE
A. Rough
B. Rigid
C. Blunt
D. Reliable
Answer: B
15. Given four alternatives, Choose 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
Answer: D
16. if the universal gravitational constant were decreasing with time, then the satellite in orbit would still maintain it’s?
A. Orbital radius
B. Angular momentum
C. Tangential speed
D. Period of revolution
Answer: B
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. Gravitational constant
Answer: B
18. The second law of thermodynamics introduces the concepts of?
A. heat
B. Temperature
C. Entropy
D. Internal energy of the system
Answer: C
19. The manifestation of band structure in solids in a consequence of?
A. Heisenberg’s uncertainity principle
B. Pauli’s exclusion principle
C. Bohr’s corresponding principle
D. Ohm’s law
Answer: B
20. Quantization of electric charge is demostrated by
A. Millikan’s oild drop expriment
B. Thompson experiment
C. Rutherford alpha-ray scattering experiment
D. Stem-Gerlach experiment
Answer: A
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