MEDIUM

Earn 100

The 44th Amendment Act of 1978 is associated with which of the following?

50% studentsanswered this correctly

Important Questions on Laws of Motion

MEDIUM

Physics>Mechanics>Laws of Motion>Conservation of Momentum

A rod, of length

L

at room temperature and uniform area of cross section

A,

is made of a metal having coefficient of linear expansion

α / ° C

It is observed that an external compressive force

F

is applied on each of its ends, prevents any change in the length of the rod when its temperature rises by

∆ T K

Young's modulus,

Y

for this metal is:

MEDIUM

Physics>Mechanics>Laws of Motion>Conservation of Momentum

A mass

M

attached to a horizontal spring executes

S . H . M .

of amplitude

A_{1}

. When the mass

M

passes through its mean position, then a smaller mass

m

is placed over it and both of them move together with amplitude

A_{2}

. The ratio of

(\frac{A_{1}}{A_{2}})

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

If the kinetic energy of a particle of mass $m,$ performing uniform circular motion in a circle of radius $r,$ is $E,$ find the acceleration of the particle.

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

A body of mass

M

moving with velocity

v

explodes into two equal parts. If one part comes to rest and the other part moves with velocity

v_{0}

; what would be the value of

v_{0}

MEDIUM

Physics>Mechanics>Laws of Motion>Conservation of Momentum

An ideal gas is expanding such that

P T =

constant. The coefficient of volume expansion of the gas is

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

A copper rod of

88 c m

and an aluminum rod of unknown length have their increase in length independent of increase in temperature. The length of aluminum rod is

(α_{C u} = 1.7 \times 10^{- 5} K^{- 1} a n d α_{Al} = 2.2 \times 10^{- 5} K^{- 1})

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

Two particles $A, B$ are moving on two concentric circles of radii $R_{1}$ and $R_{2}$ with equal angular speed $ω .$ At $t = 0,$ their positions and direction of motion are shown in the figure:

Question Image

The relative velocity $\vec{V_{A}} - \vec{V_{B}}$ at $t = \frac{π}{2 ω}$ is given by:

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

During an adiabatic process, the pressure of a mixture of monatomic and diatomic gases is found to be proportional to the cube of the temperature. Find the value of

γ = \frac{C_{p}}{C_{v}}

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

Water is used as a coolant because

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

Describe the total degrees of freedom for mono-atomic molecule, diatomic molecule and triatomic molecule.

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

Estimate the total number of air molecules in a room of capacity

25 m^{3}

at a temperature of

27 ° C

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

The ratio

γ = \frac{C_{p}}{C_{v}}

for a gas mixture consisting of

8 g

of helium and

16 g

of oxygen is

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

The temperature of a silver bar rises by

10 ° C

when it absorbs

1.23 kJ

of energy by heat. The mass of the bar is

525 g

. Determine the specific heat of silver.

MEDIUM

Physics>Mechanics>Laws of Motion>Conservation of Momentum

Derive the ratio of two specific heat capacities of mono-atomic, diatomic and triatomic molecules.

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

In the above question, if

γ = 1.5

, the gas may

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

500 J

of heat energy is removed from

4 moles

of a monoatomic ideal gas at constant volume. The temperature drops by

MEDIUM

Physics>Mechanics>Laws of Motion>Conservation of Momentum

Three moles of oxygen are mixed with two moles of helium. What will be the ratio of specific heats at constant pressure and constant volume for the mixture?

MEDIUM

Physics>Mechanics>Laws of Motion>Conservation of Momentum

A gaseous mixture enclosed in a vessel contains

1 g

mole of a gas

A

(with

γ = 5 / 3

) and another gas

B

(with

γ = 7 / 5

) at a temperature

T

. The gases

A

and

B

do not react with each other and are assumed to be ideal. The number of gram moles of

B

γ

for the gaseous mixture is

19 / 13

is:

EASY

Physics>Mechanics>Laws of Motion>Conservation of Momentum

If universal gas constant is

R

, the essential heat to increase from 273 K to 473 K at constant volume for monoatomic ideal gas of 4 mol is

The 44th Amendment Act of 1978 is associated with which of the following?

Important Questions on Laws of Motion

Learn and Prepare for any exam you want !