WBJEE · Physics · Work Power Energy
A particle of mass \(M\) and charge \(q\) is released from rest in a region of uniform electric field magnitude \(E\). After a time \(t\), the distance travelled by the charge is \(S\) and the kinetic energy attained by the particle is \(T\). Then, the ratio \(T / S\)
- A remains constant with time t
- B varies linearly with the mass \(M\) of the particle
- C is independent of the charge \(q\)
- D is independent of the magnitude of the electric field E
Answer & Solution
Correct Answer
(A) remains constant with time t
Step-by-step Solution
Detailed explanation
Given, mass of the particle \(=M\). Charge on the particle \(=q\) Electric field \(=E\) Initial velocity, \(u=0\) \(\therefore\) Acceleration, \(a=\frac{F}{M}=\frac{q E}{M}\) :.Distance travelled in electric field, \(S=u t+\frac{1}{2} a t^{2}\)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A gas bubble of \(2 \mathrm{cm}\) diameter rises througha liquid of density \(1.75 \mathrm{g} \mathrm{cm}^{-3}\) with a fixed speed of \(0.35 \mathrm{cms}^{-1}\). Neglect the density of the gas. The coefficient of viscosity of the liquid isWBJEE 2016 Hard
-
Consider the P-V diagram for 1 mole of an ideal monatomic gas shown in the figure. Which of the following statements is/are true?WBJEE 2021 Medium - For nuclei with mass number close to 119 and 238 , the binding energies per nucleon are approximately \(7.6 \mathrm{MeV}\) and \(8.6 \mathrm{MeV}\) respectively. If a nucleus of mass number 238 breaks into two nuclei of nearly equal masses, what will be the approximate amount of energy released in the process of fission?WBJEE 2020 Medium
- An infinite sheet carrying a uniform surface charge density \(\sigma\) lies on the \(x y\) -plane. The work done to carry a charge \(q\) from the point \(\mathbf{A}=a(\mathbf{i}+2 \hat{\mathbf{j}}+3 \hat{\mathbf{k}})\) to the point \(\mathbf{B}=a(\mathbf{i}-2 \hat{\mathbf{j}}+6 \hat{\mathbf{k}})\)
(where \(a\) is a constant with the dimension of length and \(\varepsilon_{0}\) is the permittivity of free space) isWBJEE 2014 Medium - A uniform solid spherical ball is rolling down a smooth inclined plane from a height \(h\). The velocity attained by the ball when it reaches the bottom of the inclined plane is v. If the ball is now thrown vertically upwards with the same velocity \(v\), the maximum height to which the ball will rise isWBJEE 2014 Medium
- A point source is placed at coordinates (0,1) in \(x y\) -plane. A ray of light from the source is reflected on a plane mirror placed along the
\(X\) -axis and perpendicular to the \(x y\) -plane. The reflected ray passes through the point \((3,3) .\) What is the path length of the ray from (0,1) to (3,3)\(?\)WBJEE 2018 Easy
More PYQs from WBJEE
- Correct solubility order of \(\mathrm{AgF}, \mathrm{AgCl}, \mathrm{AgBr}, \mathrm{Agl}\) in water isWBJEE 2024 Medium
-
An ideal gas undergoes the cyclic process abca as shown in the given \(\mathrm{P}-\mathrm{V}\) diagram. It rejects \(50 \mathrm{~J}\) of heat during \(a b\) and absorbs \(80 \mathrm{~J}\) of heat during ca. During \(b c\), there is no transfer of heat and \(40 \mathrm{~J}\) of work is done by the gas. What should be the area of the closed curve abca?WBJEE 2020 Medium - \(f: X \rightarrow \mathbb{R}, X=\{x \mid 0 < x < 1\}\) is defined as \(f(x)=\frac{2 x-1}{1-|2 x-1|}\). ThenWBJEE 2022 Medium
- \(\left|\begin{array}{ccc}x & 3 x+2 & 2 x-1 \\ 2 x-1 & 4 x & 3 x+1 \\ 7 x-2 & 17 x+6 & 12 x-1\end{array}\right|=0\) is true forWBJEE 2021 Easy
- If \(\cos \theta+i \sin \theta, \theta \in \mathbb{R}\), is the root of the equation
\(a_0 x^n+a_1 \cdot x^{n-1}+\ldots .+a_{n-1} x+a_n=0, a_0, a_1, \ldots \ldots . a_n \in \mathbb{R}, a_0 \neq 0\)
then the value of \(a_1 \sin \theta+a_2 \sin 2 \theta+\ldots .+a_n \sin n \theta\) isWBJEE 2024 Medium - Best reagent for nuclear iodination of aromatic compounds isWBJEE 2015 Hard