AIIMS Physics Class 11 Questions

If energy of electron in ground state is^{-13}.6 then find out speed of electron in fourth orbit of H⁻atom

If energy of electron in ground state is −13.6 then find out speed of electron in fourth orbit of H⁻atom

If radius of the earth is 6347 km, then what will be difference between acceleration of free fall and acceleration due to gravity near the earth's surface?

Time period of oscillation for given combination will be:

15 eV is given to e⁻ in 4^{th} orbit then find it's final energy when it comes out of H⁻atom

An oscillator circuit consists of an inductance of 0.5 mH and a capacitor of 20 μF. The resonant frequency of the circuit is nearly

If energy of 15 eV is given to electron in 4^{th} orbit then find it's final energy when it comes out of H⁻atom.

Find the maximum tension in the spring if initially spring at its natural length when block is released from rest.

A body of mass 5×10³ kg moving with speed 2 m/s collides with a body of mass 15×10³ kg in elastically and sticks to it. Then loss in K.E. of the system will be:

For a refrigerator, heat absorbed from source is 800 J and heat supplied to sink is 500 J then the coefficient of performance is

A string wave equation is given y = 0.002sin(300t - 15x) and mass density is μ = 0.1 kg/m. Then find the tension in the string.

If speed of sound in air in 330 m/s then, find the number of tones present in an open organ pipe of length 1 m whose frequency if ≤ 1000.

A string wave equation is given y = 0.002 sin (300t - 15x) and mass density is (μ = 0.1kg/m). Then find the tension in the string.

A disc of radius 5 m is rotating with angular frequency 10 rad/sec. A block of mass 2 kg to be put on the disc friction coefficient between disc and block is μₖ = 0.4, then find the maximum distance from axis where the block can be placed without sliding:

An electron is revolving in n = 3 orbit. What will be the magnetic field at the centre of hydrogen atom?

In damped oscillation graph between velocity and position will be

An electron collides elastically with H⁻like atom and excites it from ground state to n = 3. Find out the energy transfer to H⁻like atom

A container of height 10 cm is filled with water. There is a hole at bottom. Find the pressure difference between points A & B:

Given V_CM = 2 m/s, m = 2 kg, R = 4 m. Find angular momentum of ring about origin if it is in pure rolling.

Given $V_{\text{CM}} = 2 \text{ m/s}$, $m = 2 \text{ kg}$, $R = 4 \text{ m}$. (A ring is shown in the x-y plane, rolling on the positive x-axis. Its center of mass is moving with velocity $v$ in the positive x-direction.) Find angular momentum of ring about origin if it is in pure rolling.

Find the gravitational field at a distance of 2000 km from centre of earth. (Given Rₑₐᵣₜₕ = 6400 km, r = 2000 km, Mₑₐᵣₜₕ = 6 × 10²⁴ kg);

A gun applies a force $\text{F}$ on a bullet which is given by $\text{F} = \left(100 - 0.5 \times 10^5\text{t}\right)\text{N}$. The bullet emerges out with speed $400\text{ m/s}$. Then find out the impulse exerted till force on bullet becomes zero.

If a small orifice is made at a height of $0.25\text{ m}$ from the ground, the horizontal range of water stream will be,

Initially spring is in natural length and both blocks are in rest condition. Then determine the maximum extension in spring. k = 20 N/M

What is the dimension of Luminous flux:

For the system given below, find the angular frequency of oscillation?

A Carnot engine works between 27°C and 127°C. Heat supplied by the source is 500 J. then heat ejected to the sink is

If sink and source temperature of a refrigerator are 4°C and 15°C respectively. Then efficiency of refrigerator is:

Two sources of sound S1 and S2 are moving towards and away from a stationary observer with the same speed respectively. Observer detects 3 beats per second. Find speed of source (approximately). Given, $\text{F1} = \text{F2} = 500\text{ Hz}$. speed of air $= 330\text{ m/s}$

In an isothermal process 2 water drops of radius 1 mm are combined to form a bigger drop. Find the energy change in this process if $\text{T} = 0.1\text{ N/m}$

Initially spring in its natural length now a block at mass 0.25 kg is released than find out maximum force by system on floor?

Initially spring in its natural length now a block at mass 0.25 kg is released then find out maximum force by system on floor?

If 7 gm N₂ is mixed with 20 gm Ar, there Cₚ/Cᵥ of mixture will be:

If 7 gm $\text{N}_2$ is mixed with 20 gm Ar, there $\text{C}_\text{p}/\text{C}_\text{v}$ of mixture will be:

The dimensional formula of Boltzmann's constant is:

At which excited state of $\text{Be}^{3+}$ radius of $\text{e}^-$ will be same as $\text{H}$ atoms and electron in ground state.

In an Isobaric process, the work done by a di-atomic gas is 10J, the heat given to the gas will be

A disc of radius 20 cm and mass half kg is rolling on an inclined plane. Find out friction force so that disc performs pure rolling.

A conducting and closed container of capacity 100 liter contains an ideal gas at a high pressure. Now using a pump, the gas is taken out at a constant rate of 5 liter/sec. Find the time taken in which the pressure will decrease to \( \frac{P_{\text{initial}}}{100} \) ? (Assume isothermal condition)

If radius of O₂ molecule = 40Å, T = 27°C and P = 1 atm. Find the time of relaxation.

Determine the pressure difference in tube of non-uniform cross sectional area as shown in figure. $\Delta\text{P} = \ ?$ $$d_1 = 5\text{ cm},\ \text{V}_1 = 4\text{ cm},\ d_2 = 2\text{ cm},\ \text{V}_2 = \ ?$$

An ideal gas initially at pressure 1 bar is being compressed from 30 m³ to 10 m³ volume and its temperature decreases from 320 K to 280 K. then find final pressure of gas

Distance between sun and Earth is 2×10⁸ km, temperature of sun 6000 K, radius of sun 7×10⁵ km. If emissivity of the earth is 0.6, find out the temperature of the earth in thermal equilibrium

$$mx^2 - bx + k = 0$$ Find time after which to the energy will become half of initial maximum value in damped force oscillation.

If one mole of an ideal gas goes through the process $\text{A} \rightarrow \text{B}$ and $\text{B} \rightarrow \text{C}$. Given that $\text{T}_\text{A} = 400\text{ K}$, and $\text{T}_\text{C} = 400\text{ K}$. If $\frac{\text{P}_\text{A}}{\text{P}_\text{B}} = \frac{1}{5}$, then find the heat supplied to the gas:

Assertion : Kinetic energy of a system can be increased or decreased without applying any external force on the system. Reason : This is because $\text{K.E.} = \frac{1}{2}mv^2$, so it is independent of any external force.

Determine coefficient of performance of given temperature limit. $$T_1 = 27^\circ\text{C}\ \text{[outside fridge]}$$ $$T_2 = -23^\circ\text{C}\ \text{[inside fridge]}$$

Assertion: $_{1}^{3}\text{H}$ isotope does not undergo fusion of the type $_{1}^{3}\text{H} + _{1}^{2}\text{H} \rightarrow$ as it is rarely found in nature. Reason: $_{1}^{3}\text{H}$ has half life of $\approx 12$ years.

A liquid enter at point $\text{A}_1$ with speed 3.5 m/s and leaves at point $\text{A}_2$. Then find out the height attained by the liquid above point $\text{A}_2$.

Assertion: V$_{rms}$ and V$_{mean}$ of gaseous molecules is nearly of the order of velocity of sound. Reason: The sound travels in air because of vibrational molecular motion.