Recent questions and answers in Physics

Recent questions and answers in Physics

0 Votes

1 Answer 25 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

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0 Votes

1 Answer 23 Views

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

4.3k Points

0 Votes

1 Answer 65 Views

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

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0 Votes

1 Answer 27 Views

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

AlokKumar Answered in Physics Jul 1

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0 Votes

1 Answer 12 Views

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

4.3k Points

0 Votes

1 Answer 32 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

4.3k Points

0 Votes

1 Answer 24 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

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0 Votes

1 Answer 18 Views

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

4.3k Points

0 Votes

1 Answer 17 Views

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

4.3k Points

0 Votes

1 Answer 14 Views

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

AlokKumar Answered in Physics Jun 30

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0 Votes

1 Answer 23 Views

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

AlokKumar Answered in Physics Jun 30

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0 Votes

1 Answer 29 Views

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

AlokKumar Answered in Physics Jun 30

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0 Votes

1 Answer 28 Views

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

AlokKumar Answered in Physics Jun 30

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0 Votes

1 Answer 21 Views

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

AlokKumar Answered in Physics Jun 30

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0 Votes

1 Answer 25 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

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0 Votes

1 Answer 14 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

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0 Votes

1 Answer 20 Views

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

AlokKumar Answered in Physics Jun 30

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0 Votes

1 Answer 25 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

4.3k Points

0 Votes

1 Answer 13 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

4.3k Points

0 Votes

1 Answer 16 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

4.3k Points

0 Votes

1 Answer 15 Views

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

4.3k Points

0 Votes

1 Answer 11 Views

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

4.3k Points

0 Votes

1 Answer 18 Views

Check wether the following equation are dimensionally correct.

AlokKumar Answered in Physics Jun 30

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0 Votes

1 Answer 21 Views

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

AlokKumar Answered in Physics Jun 30

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0 Votes

1 Answer 15 Views

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

Gitesh kumar Garg Answered in Physics Jun 29

by Gitesh kumar Garg

7.2k Points

1 Vote

1 Answer 22 Views

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

AlokKumar Answered in Physics Jun 29

4.3k Points

1 Vote

1 Answer 18 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

4.3k Points

1 Vote

1 Answer 25 Views

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

AlokKumar Answered in Physics Jun 29

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1 Vote

1 Answer 11 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

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1 Vote

1 Answer 6 Views

Express $90^{\circ}$ in radian

AlokKumar Answered in Physics Jun 29

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1 Vote

1 Answer 24 Views

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

4.3k Points

0 Votes

1 Answer 24 Views

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

4.3k Points

1 Vote

1 Answer 17 Views

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

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1 Vote

1 Answer 15 Views

Convert 1 H.P into watt.

AlokKumar Answered in Physics Jun 29

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1 Vote

1 Answer 11 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

4.3k Points

1 Vote

1 Answer 8 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

4.3k Points

0 Votes

1 Answer 8 Views

Convert one newton into dyne.

AlokKumar Answered in Physics Jun 29

4.3k Points

1 Vote

1 Answer 9 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

4.3k Points

0 Votes

1 Answer 28 Views

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

AlokKumar Answered in Physics Jun 29

4.3k Points

0 Votes

1 Answer 20 Views

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

4.3k Points

0 Votes

1 Answer 13 Views

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

AlokKumar Answered in Physics Jun 29

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0 Votes

1 Answer 22 Views

Write down the dimension of Resistance, $R$.

AlokKumar Answered in Physics Jun 29

4.3k Points

0 Votes

1 Answer 10 Views

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

AlokKumar Answered in Physics Jun 29

4.3k Points

0 Votes

1 Answer 24 Views

What is the dimension of surface tension?

AlokKumar Answered in Physics Jun 29

4.3k Points

0 Votes

1 Answer 16 Views

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

AlokKumar Answered in Physics Jun 29

4.3k Points

0 Votes

1 Answer 13 Views

If $C$ represents the capacity of a condenser and if $V$ represents the P.d. across its end then find the dimension of $CV ^{2}$.

AlokKumar Answered in Physics Jun 29

4.3k Points

0 Votes

1 Answer 12 Views

If a current $I$ is flowing through an inductance $L$, then find the dimension of $L I ^{2}$.

AlokKumar Answered in Physics Jun 29

4.3k Points

1 Vote

1 Answer 11 Views

If $L$ and $C$ represents the inductance and capacity, then write down the dimension of LC.

AlokKumar Answered in Physics Jun 29

4.3k Points

0 Votes

1 Answer 18 Views

If $R$ and $C$ represents resistance and capacity respectively, then give the dimension of RC.

AlokKumar Answered in Physics Jun 29

4.3k Points

0 Votes

1 Answer 7 Views

If $L$ and $R$ represents inductance and resistance respectively, then what is the dimension of $\frac{L}{R}$?

AlokKumar Answered in Physics Jun 29

4.3k Points

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