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POLYCET (2022)  7
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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Question 1 of 30
1. Question
The number of terms needed to get Sn = 0 in the A.P, 18, 16, 14 …
a. 19
b. 27
c. 21
d. 17 
Question 2 of 30
2. Question
The ratio of the sums of first m and n terms of an A.P, is m2 : n2. Then the ratio of the mth term and nth term is
a. (m1) : (m+1)
b. (m1) : (n1)
c. (2m1) : (2n1)
d. (m+1) : (n+1) 
Question 3 of 30
3. Question
In an A.P, d = 7 and a22 = 149. Then sum of first 22 terms of that A.P, is
a. 1661
b. 1762
c. 1881
d. 1331 
Question 4 of 30
4. Question
Which term of the A.P, 3, 8, 13, 18 … is 78 ?
a. 10
b. 16
c. 8
d. 12 
Question 5 of 30
5. Question
In an A.P, the first term is 12, 7th term is 24 less than the 11th term. Then the 20th term of that A.P, is
a. 96
b. 48
c. 118
d. 126 
Question 6 of 30
6. Question
If the sum of three consecutive terms of an A.P, is 45, the middle term of three terms is
a. 14
b. 15
c. 12
d. 18 
Question 7 of 30
7. Question
The 7th term of an A.P, is 40. Then the sum of its first 13 terms is
a. 520
b. 480
c. 630
d. 420 
Question 8 of 30
8. Question
In an A.P, a8 = 23 and a12 = 39 then that A.P, is
a. 5, 1, 3, 7 …
b. 5, 1, 3, 7 …
c. 5, 1, 3, 7 …
d. None 
Question 9 of 30
9. Question
The sum of first 20 terms of the A.P, 1, 4, 7, 10 … is
a. 390
b. 590
c. 480
d. 630 
Question 10 of 30
10. Question
If a, 7, b, 23, c are in A.P, then a + b + c =
a. 45
b. 13
c. 31
d. 40 
Question 11 of 30
11. Question
What is the name given to line joining focal point, pole and centre of curvature ?
a. Focal length
b. Focal lens
c. Principal axis
d. Focal point 
Question 12 of 30
12. Question
A real and inverted image of the same size is formed by a convex lens , when the object is placed
a. Between F and C
b. At C
c. At F
d. Between F and Optical centre 
Question 13 of 30
13. Question
Which of the following lens act as converging lens
a. Biconvex lens
b. All
c. Convex concave
d. Plano convex lens 
Question 14 of 30
14. Question
When a refracted ray is distracted from its original path this displacement is called
a. Reflection
b. Lateral displacement
c. Dispersion
d. Refraction 
Question 15 of 30
15. Question
The virtual image formed with a convex lens when the object is placed
a. At C
b. Beyond C
c. At F
d. Between P and F 
Question 16 of 30
16. Question
An object is placed at a distance of 10 cm from a convex lens of focal length 10 cm. The image is formed at
a. 20 cm
b. 10 cm
c. Infinity
d. 100 cm 
Question 17 of 30
17. Question
The parallel rays to principal axis after refraction convergent at
a. Focus
b. Beyond C
c. Pole
d. Centre of curvature 
Question 18 of 30
18. Question
If focal length (f) is 20 cm and object distance (u) is 30 cm is placed on the principal axis of convex lens then , What is the value of image distance (v) ?
a. 60 cm
b. 20 cm
c. 40 cm
d. 80 cm 
Question 19 of 30
19. Question
The ratio of speed of light in air to speed of light in any medium is called
a. Radius of curvature
b. Absolute refractive index
c. Pole
d. Refractive index 
Question 20 of 30
20. Question
Refractive indices of water , sulphuric acid , glass and carbon disulphide are 1.33 , 1.43 , 1.53 , 1.63.The light travels slowest in
a. Sulphuric acid
b. Water
c. Carbon disulphide
d. Glass 
Question 21 of 30
21. Question
Brain is present in bony box called
a. Cartilage
b. Skull
c. Ribcage
d. Cranium 
Question 22 of 30
22. Question
The energy used for whole body by the brain is
a. 2%
b. 20%
c. 10%
d. 15% 
Question 23 of 30
23. Question
Plants with weak stems like in cucumber and bittergourd show………
a. Phototropism
b. Thigmotropism
c. Geotropism
d. Chemotropism 
Question 24 of 30
24. Question
Name the gland which is close to trachea
a. Adrenal
b. Thyroid
c. Liver
d. Pancreas 
Question 25 of 30
25. Question
Pad like swellings near the leaf base of mimosa pudica,which are sensitive to touch are called
a. Cells of malvini
b. Tulnivi
c. Pulvini cells
d. None 
Question 26 of 30
26. Question
Afferent nerves are also known as
a. Sensory nerves
b. Motor nerves
c. Mixed nerves
d. None 
Question 27 of 30
27. Question
Root initiation is proposed by
a. Cytokinins
b. Gibberellins
c. Auxin
d. Abscisic acid 
Question 28 of 30
28. Question
The largest region of brain
a. Cerebrum
b. Cerebellum
c. Medulla oblongata
d. None 
Question 29 of 30
29. Question
Roots of plants growing towards water in the soil is called
a. Geotropism
b. Phototropism
c. Hydrotropism
d. Chemotropism 
Question 30 of 30
30. Question
Name the hormone which control the menstrual cycle in females
a. Progesterone
b. Estrogen
c. Thyroxin
d. Adrenalin