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POLYCET (2022) - 11
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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Question 1 of 30
1. Question
If a vertical pole of length 6 m casts a shadow 4 m long on the ground and at the same time a tower casts a shadow 28 m long . then the height of the tower is
a. 21 m
b. 42 m
c. 13 m
d. 9 m -
Question 2 of 30
2. Question
If in a triangle ABC , A and B are complementary then the C is
a. 0
b. -1
c. None
d. 1 -
Question 3 of 30
3. Question
( sec A + tan A )( 1 – sin A ) is
a. Cos A
b. Cosec A
c. Tan A
d. Sec A -
Question 4 of 30
4. Question
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Question 5 of 30
5. Question
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Question 6 of 30
6. Question
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Question 7 of 30
7. Question
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Question 8 of 30
8. Question
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Question 9 of 30
9. Question
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Question 10 of 30
10. Question
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Question 11 of 30
11. Question
Which converts mechanical energy into electrical energy ?
a. Switch
b. Motor
c. Generator
d. Battery -
Question 12 of 30
12. Question
To understand the working of a electric motor we need to understand the behaviour of a ___________kept in a uniform magnetic field
a. Electric fields carrying coil
b. Magnetic fields carrying coil
c. Current carrying coil
d. Magnetic carrying coil -
Question 13 of 30
13. Question
The magnetic lines of force
a. They are straight lines
b. None
c. Do not intersect each other
d. Intersects each other -
Question 14 of 30
14. Question
The current in a generator armature is AC. Because
a. The rotation of the armature causes the field through into reverse
b. The current in the field coils in AC
c. The magnetic field reverses at intervals
d. The commutator feeds current into it in opposite directions every half cycle -
Question 15 of 30
15. Question
A magnetic field is a ……….. quantity
a. Dimensionless
b. Scalar
c. Unitless
d. Vector -
Question 16 of 30
16. Question
In right hand rule , the fore-finger , the middle finger and the thumb finger are ————-to each other.
a. Coincidence
b. None
c. Parallel
d. Perpendicular -
Question 17 of 30
17. Question
According to right hand rule , the fore-finger points towards the direction of
a. Velocity
b. None
c. Field
d. Force -
Question 18 of 30
18. Question
In right hand rule , the thumb gives direction of
a. None
b. Field
c. Force
d. Velocity -
Question 19 of 30
19. Question
Dynamo and motors are based on
a. Faraday’s law and Ampere’s force law respectively
b. Ampere’s force law
c. Ampere’s force law and Faraday’s law respectively
d. Faraday’s law -
Question 20 of 30
20. Question
The magnetic field inside a long straight solenoid carrying current ——————
a. Is same at all points
b. Increases as we move towards its end
c. Decreases as we move towards its end
d. Is zero -
Question 21 of 30
21. Question
Macro evolution is
a. The process of species formation
b. The process of genus formation
c. The process of formation of family
d. The process of formation of order -
Question 22 of 30
22. Question
Name of the ship in which Charles Darwin voyaged
a. HMS eagle
b. HMS beagle
c. HBS beagle
d. Titanic -
Question 23 of 30
23. Question
The following thing leads to variations in offsprings in a population
a. Sexual reproduction
b. Errors in DNA copying
c. Both Sexual reproduction & Errors in DNA copying
d. DNA copying -
Question 24 of 30
24. Question
Appendix is the vestigial organ in human being but useful for
a. Monkey
b. Alligator
c. Rabbit
d. Crocodile -
Question 25 of 30
25. Question
Mendal experiment stands for
a. Heredity
b. Variations
c. Evolution
d. Mutation -
Question 26 of 30
26. Question
In male human beings , all the chromosomes are paired perfectly except one that is
a. X chromosome
b. Y chromosome
c. Small chromosome
d. Both X chromosome & Y chromosome -
Question 27 of 30
27. Question
Who concluded that natural selection contributed to arising of new species
a. Alfred Russel Wallace
b. August Weismann
c. Lamarck
d. Malthus -
Question 28 of 30
28. Question
Identify the phenotype ratio of di-hybrid cross
a. 3:1
b. 1:2:1
c. 1:3
d. 9:3:3:1 -
Question 29 of 30
29. Question
Phenotype ratio of monohybrid cross is
a. 1:2:1
b. 4:1
c. 3:1
d. 1:3:1 -
Question 30 of 30
30. Question
Elongation of neck and forelimbs in Giraffe is an example for
a. Survival of the fittest
b. Natural selection
c. Inheritance of acquired characters
d. All