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Sushant Chaudhary

EduRev JEE

Sushant Chaudhary
EduRev JEE
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Discussed Questions
Sushant Chaudhary upvoted   •  4 weeks ago

An object approaches a fixed diverging lens with a constant velocity from infinity along the principal axis. The relative velocity between object and its image will be :
  • a)
    increasing
  • b)
    decreasing
  • c)
    first increases then decreases    
  • d)
    first decreases and then increases
Correct answer is option 'B'. Can you explain this answer?

Praveen Kumar answered

Sushant Chaudhary upvoted   •  Feb 04, 2025

The enthalpy of neutralisation of HCl and NaOH is -57 kJ mol-1. The heat evolved at constant pressure (in kJ) when 0.5 mole of H2SO4 react with 0.75 mole of NaOH is equal to
  • a)
    57 ×
  • b)
     57 × 0.5
  • c)
    57 
  • d)
     57 × 0.25
Correct answer is option 'A'. Can you explain this answer?

Knowledge Hub answered
-57 kJ of heat evolved when 1 mole of NaOH reacted with an acid.
We have 1 mole of H+ and 0.75 moles of OH-. So OH- iis limiting reagent. Or only 0.75 moles of OH- will be used. So for 1 mole of OH-, we have  -57 kJ heat released. Therefore for 0.75 moles, we have ¾× -57 kJ heat released.

Sushant Chaudhary upvoted   •  Jan 22, 2025

Which of the following represents the given mode of hybridisation sp2 – sp2 – sp – sp from left to right?
  • a)
    H2C = CH – C ≡ N
  • b)
    HC ≡ C – C ≡ CH
  • c)
    H2C = C = C = CH2
  • d)
Correct answer is option 'A'. Can you explain this answer?

Notes Wala answered
A has the following hybridization order:
Nitrogen atom has an sp hybridization because it has three bond pairs and one lone pair.
Note: lone pair and negative charge on an atom can be converted to a bond while considering the hybridization.
B has the following hybridization order:
C has the following hybridization order:
D has the following hybridization order:
Hence A is the correct answer.

Sushant Chaudhary upvoted   •  Jan 13, 2025

x – 2y + 4 = 0 is a common tangent to y2 = 4x &  +  = 1. Then the value of b and the other common tangent are given by
  • a)
    b = √3 ;x + 2y + 4 = 0
  • b)
    b = 3; x + 2y + 4 = 0
  • c)
    b = √3 ;x + 2y– 4 = 0
  • d)
    b = √3 ; x – 2y – 4 = 0
Correct answer is option 'A'. Can you explain this answer?

Knowledge Hub answered
Equation of tangent of ellipse is
y=mx±+ ..............(i)
Given equation is x−2y+4=0 .........(ii)
Since (i) & (ii) are same, comparing them, we get
m=1/2&a2m2 + b2 = 2
⇒4*1/4+b2=4 
b=±3
Equation of tangent of parabola
y=mx+1/m .........(iii)
by (i) & (iii)
1/m^2= a2m2+b2
on solving it we get m=±1/2
with m = −1/2 , we get x+2y+4=0 

Sushant Chaudhary upvoted   •  Jan 05, 2025

 two single turn circular loop of wire have radius  20 cm and 2 cm. The loops lies in the same plane and are concentric. Find the mutual inductance of the pair is: 
  • a)
    7.9 x 10-6 
  • b)
    7.9 x 10-7 
  • c)
    2.4 x 10-6 
  • d)
    4.0 x 10-7 
Correct answer is option 'D'. Can you explain this answer?

Top Rankers answered
Let the current i in the large loop of radius R = 20cm produces a magnetic field of magnitude at its centre. Since the radius r = 2cm of the smaller loop is  r<<R, so we may treat the flux through the small loop as being approximately
So, the mutual inductance of the loop is

What does it mean a force is encountered?

Sushant Chaudhary answered  •  Sep 16, 2024
When we say a force is encountered, it signifies that an object is experiencing a push or pull due to the interaction with another object or field. This concept is pivotal in understanding the mechanics of motion in physics and engineering.
Understanding Force
Force is defined as an interaction that changes the motion of an object. It can be categorized into different types:
... more

Find equation of straight line passing through origin (1 0) and (2 1) then find its X and Y intercept using intercept form?

Sushant Chaudhary answered  •  Jul 23, 2024


Equation of a straight line passing through two points
To find the equation of a straight line passing through two points, we first find the slope of the line using the formula:
\[ m = \frac{y_2 - y_1}{x_2 - x_1} \]
Given the points (1, 0) and (2, 1), the slope of the line is:
\[ m = \frac{1 - 0}{2 - 1} = 1 \]
So, the equation of the line passing t... more

If r represents the radius of the orbit of the satellite of mass m moving around the planet of mass M, then velocity of the satellite ν is obtained from the relation
  • a)
    ν2 = GM/r
  • b)
    ν = GM/r
  • c)
    ν = Gm/r
  • d)
    ν = GMm/r
Correct answer is option 'A'. Can you explain this answer?

Sushant Chaudhary answered  •  Jun 21, 2024
Explanation:
- Given: r represents the radius of the orbit of the satellite of mass m moving around the planet of mass M.
- We need to find the relation for the velocity of the satellite ν.

Newton's Law of Gravitation:
- According to Newton's law of gravitation, the gravitational force between two bodies is given by F = GMm/r^2, where G is the univ... more
Sushant Chaudhary asked   •  Jun 21, 2024

The time period of simple harmonic motion of mass M in the given figure is , where the value of α is
.
  • a)
    ERROR
  • b)
    ERROR
  • c)
    ERROR
  • d)
    ERROR
Correct answer is '12'. Can you explain this answer?

Manish Aggarwal answered

The angle between two lines whose direction ratios are 1,2,1 and 2,-3,4 is:​
  • a)
    30°
  • b)
    60°
  • c)
    90°
  • d)
    45°
Correct answer is option 'C'. Can you explain this answer?

Sushant Chaudhary answered  •  Jun 08, 2024
Calculating the angle between two lines:
To find the angle between two lines, we can use the formula:
cosθ = (a1 * a2 + b1 * b2 + c1 * c2) / (sqrt(a1^2 + b1^2 + c1^2) * sqrt(a2^2 + b2^2 + c2^2))
Where a1, b1, c1 are the direction ratios of the first line and a2, b2, c2 are the direction ratios of the second line.

Given direction ratios:
Line 1: 1, 2, 1<... more
Sushant Chaudhary asked   •  Oct 07, 2023

What secondary colour is obtained by mixing blue and red colours?
  • a)
    Pink
  • b)
    Brown
  • c)
    Orange
  • d)
    Purple
Correct answer is option 'D'. Can you explain this answer?

Geetika Nambiar answered
Understanding Color Mixing
Color mixing is a fundamental concept in art and design. It helps in creating new colors through the combination of primary colors. In this case, we focus on mixing blue and red.
Primary Colors
- Primary colors are the foundation of all other colors. The primary colors are:
- Red
- Blue
- Yellow
Mixing Blue and Red... more

Sushant Chaudhary asked   •  Jul 22, 2023

Can I expect questions from electromagnetism in the physics section of the JEE Advanced exam?

Sai Chauhan answered
Introduction:
The JEE Advanced exam is a highly competitive entrance exam for admission to prestigious engineering colleges in India. The physics section of the JEE Advanced exam covers a wide range of topics, including electromagnetism.

Electromagnetism in JEE Advanced:
Electromagnetism is an important topic in the physics section of the JEE Advanced exam. It is... more

Sushant Chaudhary asked   •  Jun 06, 2023

A waveform shown when applied to the following circuit will produce which of the following output waveforms. Assume ideal diode configuration and R1 = R2
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'D'. Can you explain this answer?

Swati Verma answered
The PN junction will conduct only when it is forward biased i.e. when - 5 V is fed to it. So, it will conduct only for third-quarter part of the signal shown and when it conducts potential drop 5 V will be across both the resistors, so output voltage across R2 is 2.5 V.
∴ V0 = −2.5V
When input voltage is 5 V, PN junction is reversed biased. So, output voltage will be zero at that time.

Sushant Chaudhary asked   •  May 18, 2023

Determine the value of f(0) so that f(x) is continuous at x = 0, if 
  • a)
    2
  • b)
    1
  • c)
    1/2
  • d)
    none of these
Correct answer is option 'C'. Can you explain this answer?

Preeti Iyer answered
For f(x) to be continuous at x = 0

Sushant Chaudhary asked   •  Apr 24, 2023

With reference to the Seed Traceability, Authentication and Holistic Inventory (SATHI) portal, consider the following statements:
  1. It is developed by the National Informatics Centre in collaboration with the Union Ministry of Agriculture and Farmers Welfare.
  2. It has a feature of a QR code through which the seeds can be traced.
Which of the statements given above is/are correct?
  • a)
    1 Only
  • b)
    2 Only
  • c)
    Both 1 and 2
  • d)
    Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?

Anjali Sharma answered
Recently, the Union Agriculture and Farmers Welfare Minister launched the SATHI Portal and Mobile App.
  • The Seed Traceability, Authentication and Holistic Inventory (SATHI) portal is a Centralized Online System designed to deal with the challenges of seed production, quality seed identification and seed certification.
  • It has been developed by the National Informatics Centre (NIC) in collaboration with the Union Ministry of Agriculture and Farmers Welfare on the theme of ‘Uttam Beej – Samriddh Kisan.
  • There will be a QR code under this system, through which the seeds can be traced.
  • It will ensure a quality assurance system, and identify the source of seed in the seed production chain.
  • The system will consist of integrated 7 verticals of the seed chain - Research Organisation, Seed Certification, Seed Licensing, Seed Catalogue, Dealer to Farmer Sales, Farmer Registration and Seed DBT.
  • Seeds with valid certification can only be sold by valid licensed dealers to centrally registered farmers who will receive a subsidy through DBT directly into their pre-validated bank accounts.
Hence both statements are correct

Sushant Chaudhary asked   •  Mar 29, 2023

Which of the following should be highlighted in a poster?
  • a)
    All details related to the issue
  • b)
    Only the essential details related to the issue
  • c)
    Only the name of the issuing authority/organization
  • d)
    Only the date and time of the event
Correct answer is option 'B'. Can you explain this answer?

Lavanya Menon answered
As mentioned in the given text, posters should highlight only the important issue/issues and not give many details.

Sushant Chaudhary asked   •  Mar 02, 2023

A cart is moved horizontally at a constant velocity of 4 m/sec. A ball is thrown from it at a velocity of 4 m/sec and at an angle θ horizontally with respect to the cart. Assume that the height of the cart is very small, such that the motion of the ball is assumed to be a ground to ground projectile. If the horizontal range of the ball with respect to the ground is R1 and with respect to the cart is R2, then ______________.
  • a)
    R1 will be maximum for θ = 900
  • b)
    R1 will be maximum for θ = 600
  • c)
    R2 will be maximum for θ = 600
  • d)
    R2 will be maximum for θ = 450
Correct answer is option 'B,D'. Can you explain this answer?

Varun Kapoor answered
Range with respect to ground
Rmax when sin θ + sin θ cosθ will be max.
cosθ + 2cos2 θ - 1 = 0
Since the | velocity | of the ball with respect to the cart is constant, so the range with respect to the cart will be maximum when θ = 450

Sushant Chaudhary asked   •  Feb 12, 2023


Consider the above reaction. The number of π electrons present in the product 'P' is _________. (In integers)
    Correct answer is '2'. Can you explain this answer?

    Raghav Bansal answered

    The given reaction undergoes nucleophilic substitution by SN2 mechanism at room temperature.
    ∴ No. of π electrons present in P = 2

    Sushant Chaudhary asked   •  Jan 25, 2023

    Let PMPM be the perpendicular from the point (1, 2, 3) to xy-plane. If OP makes an angle θθ with the positive direction of the z-axis and OM makes an angle ϕϕ with the positive direction of x-axis, where O is the origin, θ and ϕ are acute angles, then
    • a)
    • b)
    • c)
      tan ϕ = 2
    • d)
    Correct answer is option 'A,B,C'. Can you explain this answer?

    Vijay Kumar answered
    Here, P be (x, y, z)
    Then, x = rsin θ ⋅ cos ϕ, y = rsin θ sin ϕ, z = rcos θ
    ⇒ 1 = rsin θ⋅cos ϕ, 2 = rsin θ sin ϕ, 3 = rcos θ....(1)
    ∴ from (1) we have
    (neglecting -Ve sign assuming acute angles)
    ∴
    ⇒

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