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# JEE Free Doubts and Solutions

### IIT JEE - Main - Physics - Current Electricity

## if difference between areas of parallel plates of capacitor is different then equivalent capacitance is

**vb83824**8th April 2020, 9:37 AM

### IIT JEE - Main - Physics

## Provide answer with Explnation...ThanQ

**vidyavikram10**7th April 2020, 5:44 AM

### IIT JEE - Main - Mathematics

## If f(x)f(x) is a differentiable function and g(x)g(x)is a double differentiable function such that |f(x)|≤1|f(x)|≤1 and f'(x)=g(x)f′(x)=g(x). If f2(0)+g2(0)=9f2(0)+g2(0)=9. Prove that there exists some c∈(–3,3)c∈(–3,3)such thatg(c).g''(c)<0

**abhyudith**6th April 2020, 11:40 PM

### IIT JEE - Main - Mathematics

## Use convolution to find inverse 𝑍-transform of (i) 𝑧2 𝑧2+1 (ii) 𝑧2 (𝑧−2)2(𝑧−3)2

**sakshitiwari1565**5th April 2020, 8:07 PM

### IIT JEE - Main - Mathematics - Sequences and Series

## Find the value of 1 + 2/3 - 2/4 + 2/5 + ...... to infinite is :

**arijitdas1908**4th April 2020, 2:09 PM

### IIT JEE - Main - Mathematics

## A ball is thrown in the air at time t = 0 seconds from a 20 ft high platform. The height of the ball, h(t), can be modeled as a function of time t by the equation h(t) = –16t 2 + 40t + 20. After the ball has reached its maximum height, there comes a point where the ball is at the same height from the ground as the difference between its launch height and maximum heights. How any seconds after being thrown did it reach that point?

**zeba.nisa16072004**3rd April 2020, 6:31 PM

### IIT JEE - Main - Physics

## wjen a vanderwalls gas undergoes free expansion

**ashutosharnold1998**3rd April 2020, 1:25 AM

### JEE Plances - JEE (Main) - Mathematics

## Detailed solution for this.

**g_archanasharma**16th December 2018, 6:20 PM

### JEE Plances - JEE (Main) - Mathematics

## Detailed solution for this.

**g_archanasharma**16th December 2018, 6:19 PM

### JEE Plances - JEE (Main) - Mathematics

## Detailed solution for this.

**g_archanasharma**16th December 2018, 6:18 PM

### JEE Plances - JEE (Main) - Mathematics

## Detailed solution for this.

**g_archanasharma**16th December 2018, 6:11 PM

### JEE Plances - JEE (Main) - Mathematics

## Detailed solution for this.

**g_archanasharma**16th December 2018, 6:09 PM

### JEE Plances - JEE (Main) - Mathematics

## Sir pls solve this question.

**rsudipto**15th December 2018, 6:13 PM

### JEE Plances - JEE (Main) - Mathematics

## Sir in this question how is the inverse fn derived. Pls explain in details.

**rsudipto**15th December 2018, 8:55 AM

### JEE Plances - JEE (Main) - Mathematics

## Sir pls solve this question.

**rsudipto**14th December 2018, 9:52 AM

### JEE Plances - JEE (Main) - Mathematics

## Sir pls solve this question.

**rsudipto**14th December 2018, 9:51 AM