Recent questions and answers in Physics

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A driver decreases the speed of a car from 25 m/s to 10 m/s in 5 Find the acceleration of the car.

AlokKumar Answered in Physics Dec 24, 2022

by AlokKumar

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1 Answer 7 Views

A car travels 30 km at a uniform speed of 40 km/h and the next speed of 20 km/h. Find its average speed.

Bittu Answered in Physics Dec 12, 2022

by Bittu

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On a 120 km track, a train travels the first 30 km at a uniform speed of 30 km/h. How fast must the train travel the next 90 km so as to average 60 km/h for the entire trip?

Bittu Answered in Physics Dec 12, 2022

by Bittu

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The train 'A' travelled a distance of 120 km in 3 hours whereas another train 'B' travelled a distance of 180 km in 4 hours. Which train travelled faster?

Bittu Answered in Physics Dec 12, 2022

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A scooterist covers a distance of 3 kilometres in 5 minutes. Calculate his speed in :

Bittu Answered in Physics Dec 12, 2022

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1 Answer 33 Views

Is it correct that the average velocity is always equal to the mean value of the initial and final velocities.

AlokKumar Answered in Physics Jul 1, 2022

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A small ball is dropped from a height $100 m$ on a floor. The ball rebounds to a height of 20 metre.

AlokKumar Answered in Physics Jul 1, 2022

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0 Votes

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A ball is dropped on a floor from a height of 5 meter. It rebounds to a height of $3.2$ metre. If the ball as in contact with the floor for $0.1 sec$.,

AlokKumar Answered in Physics Jul 1, 2022

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Under what condition the instantaneous velocity of a body is equal to its average velocity.

AlokKumar Answered in Physics Jul 1, 2022

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The displacement of a particle is represented by $y= A t+ B t^{2}+ C t^{3}$, then what are the dimensions of A, B and C.

AlokKumar Answered in Physics Jun 30, 2022

by AlokKumar

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1 Answer 79 Views

Calculate the dimension of $\alpha, \beta$ and $\gamma$ in the equation, $E =\alpha M +\beta M ^{-1} LT ^{-2}+\gamma MLT ^{-1}$ where $E$ represents energy.

AlokKumar Answered in Physics Jun 30, 2022

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1 Answer 42 Views

If in the equation $y=a \sin (\omega t-K x), y$ and $x$ stands for distance and $t$ for time respectively, then find the dimension of $a, \omega$, and $K$.

AlokKumar Answered in Physics Jun 30, 2022

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The speed of a particle as a function of time is represented by $V=A_{1}$ $\cos A _{2} t$. What are the dimention and S. I. units of constant $A _{1}$ and $A _{2}$?

AlokKumar Answered in Physics Jun 30, 2022

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In the equation given below what are the $S . I$. units of $C_{1}$ and $C_{2}$, if $y$ is in metre and $t$ is in second.

AlokKumar Answered in Physics Jun 30, 2022

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Check dimensionally wether the equation $x=u t+\frac{1}{8} f t^{2}$ is incorrect.

AlokKumar Answered in Physics Jun 30, 2022

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Obtain the dimension of the constant ' $a$ ' and ' $b$ ' involved in the Vander Waal's equation of state.

AlokKumar Answered in Physics Jun 30, 2022

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In the equation of velocity of sound $V=\sqrt{\frac{\gamma P}{p}}$ obtain the dimension of $\gamma$,

AlokKumar Answered in Physics Jun 30, 2022

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The acceleration of a particle is found to depend upon time as follows —

AlokKumar Answered in Physics Jun 30, 2022

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1 Answer 98 Views

The position of a particle at any time is given by.

AlokKumar Answered in Physics Jun 30, 2022

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1 Answer 36 Views

Is it correct to say that two quantities which are to be multiplied must have the same dimension.

AlokKumar Answered in Physics Jun 30, 2022

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1 Answer 29 Views

Is it correct to say that two quantities which are to be added must have the same dimension.

AlokKumar Answered in Physics Jun 30, 2022

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1 Answer 32 Views

In a given slide callipers 10 division of its vernier coincides with its 9 main scale division.

AlokKumar Answered in Physics Jun 30, 2022

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1 Answer 40 Views

The circlular scale of a spherometer is divided into 200 equal divisions; if its least count is 0.005 mm

AlokKumar Answered in Physics Jun 30, 2022

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1 Answer 22 Views

It is found that error in the measurement of the radius of a sphere is $1 \%$; then what is the error in the measurement of its volume?

AlokKumar Answered in Physics Jun 30, 2022

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1 Answer 27 Views

In the equation $X=3 Y Z^{2}, X$ and $Z$ have dimension of capacitance and magnetic induction. What is the dimension of $Y$ in SI system.

AlokKumar Answered in Physics Jun 30, 2022

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If $L, C$ and $R$ repersents physical quantities inductance, capacitance and resistance respectively, then what will be dimension of $\sqrt{1 / LC }$.

AlokKumar Answered in Physics Jun 30, 2022

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A gas bubble from an explosion under water oscillates with a time period $T$ which is proportional to $P ^{a} \rho^{b} E ^{c}$ where $P$ is the pressure

AlokKumar Answered in Physics Jun 30, 2022

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Check wether the following equation are dimensionally correct.

AlokKumar Answered in Physics Jun 30, 2022

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1 Answer 37 Views

What is the dimension of $\lambda$ in the given equation.

AlokKumar Answered in Physics Jun 30, 2022

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If the radius of curvature of spherical mirror is 20 cm, what is its focal length?

Gitesh kumar Garg Answered in Physics Jun 29, 2022

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1 Answer 78 Views

In the above problem, how its numercial value will change.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 30 Views

If the unit of length, mass and time be each doubled, then how the unit of work will change.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 37 Views

In the above question; how the numerical value is affected —

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 23 Views

If the unit of mass, length and time be each doubled, then how the unit of power will change.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 9 Views

Express $90^{\circ}$ in radian

AlokKumar Answered in Physics Jun 29, 2022

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If the value of coefficient of viscosity in S.I unit is $1.2 N sec m ^{-2}$, then calculate its value in C. G. S. system.

AlokKumar Answered in Physics Jun 29, 2022

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If the density of wood in C.G.S. system is 0.5 gm / c.c., then what will be its value in S.I. unit.

AlokKumar Answered in Physics Jun 29, 2022

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The surface tension of liquid in C. G. S. system is 70 dyne / cm then what will be its value in S.I. unit.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 27 Views

Convert 1 H.P into watt.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 17 Views

If the value of pressure is $10^{6} dyne / cm ^{2}$ in C. G. S. system, then calculate its value in S.I. unit.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 12 Views

If the value of $G$, the gravitational constant in C. G. S. system is $6.70 \times 10^{-8}$, then what is its value in S. I. unit?

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 15 Views

Convert one newton into dyne.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 24 Views

If velocity of light $C$, the gravitational constant $G$ and plank's constant $h$ be chosen as the fundamental units, then find the dimensions of mass, length and time in the new system.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 41 Views

If force and mass and length are taken as fundamental units, then calculate the dimension of velocity.

AlokKumar Answered in Physics Jun 29, 2022

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If force, time and length are taken as fundamental units then calculate the dimension of surface tension, power and mass.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 17 Views

Write down the dimension of $\frac{1}{\sqrt{\mu_{0} \in_{0}}}$

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 32 Views

Write down the dimension of Resistance, $R$.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 13 Views

Write down the dimension of $\in_{0}$.

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 37 Views

What is the dimension of surface tension?

AlokKumar Answered in Physics Jun 29, 2022

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1 Answer 32 Views

Can unit of energy be written as Watt $\times$ day?

AlokKumar Answered in Physics Jun 29, 2022

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