Tiêu đề AIM NEET Part Test 14.pdf ✅

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[1] TOPIC COVERED Physics: Full Syllabus (Class 11 &12) Chemistry: Full Syllabus (Class 11 &12) Botany: Full Syllabus (Class 11 &12) Zoology: Full Syllabus (Class 11 &12) Duration: 3 hr 20 min Max Marks: 720 Date: 19/06/2022 General Instructions: • The test will contain 200 Questions of Physics, Chemistry, Botany, and Zoology & The test will be objective type. (Attempt only 180). • Every subject contains two Section A-35 Questions and Section B-15 Questions (Attempt only 10). • All 35 Questions of Section-A are Compulsory to attempt. • Time given for test is 200 minutes. • Marking is +4 for every correct answer, –1 for every wrong answer. • You can reattempt the test in case of any technical issue. • Test will start at 2:00 pm and students can attempt test at any time of their own preferences PHYSICS SECTION - A 1. Three charge 2q, −q, –q are located at the vertices of an equilateral triangle. At the center of the triangle (1) The field is zero but potential is non-zero (2) The field is non-zero but potential is zero (3) Both field and potential are zero (4) Both field and potential are non-zero 2. Plates of area A are arranged as shown. The distance between each plate is d, the net capacitance is (1) 0  A d (2) 7 0  A d (3) 0 6 A d (4) 0 5 A d 3. When a piece of aluminium wire of finite length is drawn through a series of dies to reduce its diameter to half its original value, its resistance will become (1) Two times (2) Four times (3) Eight times (4) Sixteen times 4. In the given figure, battery E is balanced on 55 cm length of potentiometer wire but when a resistance of 10  is connected in parallel with the battery then it balances on 50 cm length of the potentiometer then fine the internal resistance. (1) 1  (2) 3  (3) 10  (4) 5  AIM NEET Full Test-04
[2] 5. A wire carrying current I has the shape as shown in adjoining figure. Linear parts of the wire are very long and parallel to X-axis while semicircular portion of radius R is lying in Y-Z plane. magnetic field at point O is (1) 0 ( 2 ) 4  = −  +  I B i k R (2) 0 ( 2 ) 4  =  −  I B i k R (3) 0 ( 2 ) 4  =  +  I B i k R (4) 0 ( 2 ) 4  = −  −  I B i k R 6. A charged particle moving in a magnetic field experience a resultant force (1) In the direction of field (2) In the direction opposite to the field (3) In the direction perpendicular to both the field and its velocity (4) None of the above 7. A, B and C are parallel conductor of equal length carrying current I, I and 2I respectively. Distance between A and B is x. Distance between B and C is also x. F1 is the force exerted by B on A and F2 is the force exerted by C on A. Choose the correct answer (1) F1 = 2F2 (2) F2 = 2F1 (3) F1 = F2 (4) F1 = –F2 8. Two lines of force due to a bar magnet (1) Intersect at the neutral point (2) Intersect near the poles of the magnet (3) Intersect on the equatorial axis of the magnet (4) Do not intersect at all 9. A diamagnetic material in a magnet field moves (1) From weaker to the stronger parts of the field (2) Perpendicular to the field (3) From stronger to the weaker parts of the field (4) In none of the above directions 10. A LCR series A.C. circuit is tuned to resonance. The impedence of the circuit is now (1) R (2) 1/ 2 2 2 1       + −           R L C (3) 1/ 2 2 2 2 1 ( )       +           R L C (4) 1/ 2 2 2 1 (       +  +          R L C 11. If the threshold wavelength for sodium is 5420 Å, then the work function of sodium is (1) 4.58 eV (2) 2.28 eV (3) 1.14 eV (4) 0.23 eV 12. The energy of a hydrogen atom in its ground state is –13.6 eV. The energy of the level corresponding to the quantum number n = 2 (first excited state) in the hydrogen atom is (1) –2.72 eV (2) –0.85 eV (3) –0.54 eV (4) –3.4 eV 13. If T is the half life of a radioactive material, then the fraction that would remain after a time T/2 is (1) 1 2 (2) 3 4 (3) 1 2 (4) 2 1 2 − 14. Consider the junction diode as ideal. The value of current flowing through AB is (1) 0 A (2) 10−2 A (3) 10−1 A (4) 10−3 A 15. In a transistor if collector current is 25 mA and base current is 1 mA, then current amplification factor  is (1) 25 24 (2) 24 25 (3) 25 26 (4) 26 25
[3] 16. Which logic is represented by following diagram (1) AND (2) OR (3) NOR (4) XOR 17. A ray of light passes from a medium A having refractive index 1.6 to the medium B having refractive index 1.5. The value of critical angle of medium A is (1) 1 16 sin 15 −       (2) 1 16 sin 15 − (3) 1 1 sin 2 −       (4) 1 15 sin 16 −       18. An object has image thrice of its original size when kept at 8 cm and 16 cm from a convex lens. Focal length of the lens is (1) 8 cm (2) 16 cm (3) Between 8 cm and 16 cm (4) Less than 8 cm 19. Two coherent monochromatic light beams of intensities I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are (1) 5I and I (2) 5I and 3I (3) 9I and I (4) 9I and 3I 20. A single slit of width 0.02 mm is illuminated with light of wavelength 500 nm. The observing screen is placed 80 cm from the slit. The width of the central bright fringe will be (1) 1 mm (2) 2 mm (3) 4 mm (4) 5 mm 21. Refractive index of material is equal to tangent of polarising angle. It is called (1) Brewster s law (2) Lambert’s law (3) Malus’s law (4) Bragg’s law 22. The value of ( ) ( ) A B A B +− is (1) 0 (2) A 2 – B 2 (3) B A  (4) 2( ) B A  23. A stone dropped from the top of the tower touches the ground in 4 sec. The height of the tower is about (1) 80 m (2) 40 m (3) 20 m (4) 160 m 24. A missile is fired for maximum range with an initial velocity of 20m /s. If g = 10 m/s 2 , the range of the missile is (1) 20 m (2) 40 m (3) 50 m (4) 60 m 25. An object start sliding on a frictionless inclined plane and from same height another object start falling freely (1) Both will reach with same speed (2) Both will reach with same acceleration (3) Both will reach in same time (4) None of above 26. A shell initially at rest explodes into two pieces of equal mass, then the two pieces will (1) Be at rest (2) Move with different speed in different direction (3) Move with the same speed in opposite direction (4) Move with the same speed in same direction 27. Which of the following is not a perfectly inelastic collision (1) Striking of two glass balls (2) A bullet striking a bag of sand (3) An electron captured by a proton (4) A man jumping onto a moving cart 28. Moment of inertia of a ring of mass M and radius R about an axis passing through the centre and perpendicular to the plane is I. What is the moment of inertia about its diameter (1) I (2) I/2 (3) I/√2 (4) I + MR2 29. If the radius of the earth is suddenly contracts to half of its present value, then the duration of day will be of (1) 6 hours (2) 12 hours (3) 18 hours (4) 24 hours