JEE Mains 2024 Shift 1 Question Paper 27 January Answer Keys Solutions PDF

JEE Main 2024 Question Paper Answer Keys Solutions

Hi Students, welcome to Amans Maths Blogs (AMB). As you know that Joint Entrance Examination means JEE Main and JEE Advanced is one of the most important entrance exam in engineering entrance examination. JEE Main 2024 is Computer Based Test (CBT) and it was conducted by the National Testing Agency (NTA). On this post, you will get JEE Mains 2024 Shift 1 Question Paper 27 January Answer Keys Solutions PDF.

NTA is conducting this year of JEE Mains 2024 on 27, 29, 30, 31 January and 1 February. This exam is going to schedule in two shifts as Shift 1 from 9 AM to 12 PM and Shift 2 as from 3 PM to 6 PM.

JEE Main 2024 (27 Jan Shift 1) Physics Question Paper Answer Keys Solutions

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JEE Mains 2024 Physics 27 January Shift 1 Questions Paper Answer Keys & Solutions by AAKASH.

JEE Mains 2024 Physics 27 January Shift 1 Questions Paper Answer Keys & Solutions by ALLEN.

JEE Mains 2024 Physics 27 January Shift 1 Questions Paper Answer Keys & Solutions by RESONANCE.

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 1

Which among the following is forward biased:

Option A :

Option B : 

Option C : 

Option D : 

Answer Key: A 

Solution: According to Basic Theory.

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 2

A uniform and homogeneous rod has resistance R. If rod is cut into 5 equal parts and connected in parallel find equivalent resistance ?

Option A : 

Option B : 

Option C : 

Option D : 

Answer Key: R/25

Solution:

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 3

Acceleration due to earth on the surface is g0. If mass of earth remains same but radius is half, then find the acceleration on the surface for new system :

Option A : g₀ / 2

Option B : g₀

Option C : 2g₀

Option D : 4g₀

Answer Key: D

Solution:

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 4

Find moment of inertia about an axis passing though one corner and perpendicular to the plane.

Option A :

Option B :

Option C :

Option D :

Answer Key: 4ma²

Solution:

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 5

Two particles having mass 4g & 25g have same kinetic energy. Find ratio of their momentum?

Option A : 2 / 5

Option B : 2 / 3

Option C : 4 / 5

Option D : 3 / 4

Answer Key: A

Solution:

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 6

An object of mass 1000 kg is moving with 6 m/s. Find speed of object is mass 200 kg is added to it ?

Option A : 4 m/s

Option B : 5 m/s

Option C : 8 m/s

Option D : 6 m/s

Answer Key: B

Solution:

Linear momentum is conserved.

1000 × 6 = 1200 (v_f)

So, v_f = 5 m/s

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 7

Two very long wire having current as shown. Find the magnetic field at point ‘P’ (in micro tesla).

Option A :

Option B :

Option C :

Option D :

Answer Key: 160

Solution:

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 8

If the electron revolving in the third Bohr’s orbit of hydrogen species has radius R, then what will be its radius in fourth orbit in terms of R.

Option A : 25R / 9

Option B : 16R / 9

Option C : 36R / 9

Option D : 9R / 16

Answer Key: B

Solution:

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 9

A charge of magnitude 10^-6μC is placed at origin in x-y co-ordinate system. Find the potential difference between the two point (√3, √3) and (√6, 0). (Axes are in meters)

Option A : 3√3 x 10³ V

Option B : 3 / √3 x 10³ V

Option C : 0 V

Option D : 2√3 x 10³ V

Answer Key: C

Solution:

Same radial distance from origin Hence Potential is same at the two given point. Thus potential difference is zero.

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 10

Magnetic field having magnitude 4 Tesla makes an angle 60º with perpendicular to loop and loop has been removed from magnetic field region within 10 seconds. Find average induced emf in loop in 10 seconds in Volts?

Option A :

Option B :

Option C :

Option D :

Answer Key: 1

Solution:

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 11

Find apparent depth of the object shown in figure ?

Option A :

Option B :

Option C :

Option D :

Answer Key: 31/5

Solution:

JEE Main 2024 Physics Questions Answer Keys Solutions Shift 1 : Ques No 12

An EM wave is given by E = 200 sin [1.5 ×10⁷ – 0.05 x] N/C. Find the intensity of wave. [ε₀ = 8.85 × 10^-12 SI units] 

Option A :

Option B :

Option C :

Option D :

Answer Key: 53.1

Solution:

JEE Main 2024 (27 Jan Shift 1) Chemistry Question Paper Answer Keys Solutions

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JEE Mains 2024 Chemistry 27 January Shift 1 Questions Paper Answer Keys & Solutions by AAKASH.

JEE Mains 2024 Chemistry 27 January Shift 1 Questions Paper Answer Keys & Solutions by ALLEN.

JEE Mains 2024 Chemistry 27 January Shift 1 Questions Paper Answer Keys & Solutions by RELIABLE.

JEE Main 2024 Chemistry Questions Answer Keys Solutions Shift 1 : Ques No 1

Cyclohexene is _____ type of organic compound.

Option A : Acyclic

Option B : Alicyclic

Option C : Benzenoid and Non-Aromatic

Option D : Benzenoid and Aromatic

Answer Key: B Alicyclic 

Solution:

JEE Main 2024 Chemistry Questions Answer Keys Solutions Shift 1 : Ques No 2

Which of the following has highest magnetic moment.

Option A : d⁷

Option B : d⁸

Option C : d³

Option D : d⁶

Answer Key: D d⁶

Solution:

JEE Main 2024 Chemistry Questions Answer Keys Solutions Shift 1 : Ques No 3

Calculate the sum of bond order of CO and NO⁺.

Option A :

Option B :

Option C :

Option D :

Answer Key: 3

Solution:

JEE Main 2024 Chemistry Questions Answer Keys Solutions Shift 1 : Ques No 4

Number of species in which S is in +4 oxidation state. H₂S₂O₇, H₂SO₄, SF₄, SO₃, SOCl₂, H₂SO₃.

Option A :

Option B :

Option C :

Option D :

Answer Key: 3

Solution:

JEE Main 2024 Chemistry Questions Answer Keys Solutions Shift 1 : Ques No 5

Which element does not show variable oxidation state.

Option A : Br

Option B : I

Option C : F

Option D : Cl

Answer Key: 3

Solution:

JEE Main 2024 Chemistry Questions Answer Keys Solutions Shift 1 : Ques No 5

Number of meta directing groups are: OMe, NO₂, CH₃.

Option A : Br

Option B : I

Option C : F

Option D : Cl

Answer Key: 3

Solution:

JEE Main 2024 (27 Jan Shift 1) Mathematics Question Paper Answer Keys Solutions

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JEE Mains 2024 Mathematics 27 January Shift 1 Questions Paper Answer Keys & Solutions by AAKASH.

JEE Mains 2024 Mathematics 27 January Shift 1 Questions Paper Answer Keys & Solutions by ALLEN.

JEE Mains 2024 Mathematics 27 January Shift 1 Questions Paper Answer Keys & Solutions by RELIABLE.

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