11th Physics Important 3 Mark Question Papers

St. Britto Hr. Sec. School - Madurai

11th Physics Important 3 Mark Question Papers-Aug 2020

Time : 1.30 Hours

Part - A

Generic 3 - Answer All Question

Find Torque about an Axis.

Draw and explain the variations of force of friction vs applied force graphically.

What do you understand by the term parallax angle?

The radius of gold nucleus is 41.3 fermi. Express its volume in m³.

How do you differentiate solid liquid & gas?

How does the internal energy of a thermodynamic system change?

Write down the kinematic equations for angular motion.

Is the acceleration of a particle in circular motion not always towards the centre. Explain.

A force of 36 dynes is inclined to the horizontal at an angle of 60°. Find the acceleration in a mass of 18 g that moves in a horizontal direction.

Derive the ratio of two specific heat capacities of monoatomic, diatomic and triatomic molecules.

Athin rod of negligible mass and area of cross sectional 4x 10^-6m2, suspended vertically from one end has a length of 0.5 at 100°C the rod is cooled at 0⁰C, but prevented from contracting by attaching a mass at lower end. Find (i) mass (ii) the energy stored in rod. Given for rod, y =10¹¹ Nm^-2, coefficient of linear expansion = 10^-5 k^-1 & g = 10 ms^-2.

What is the meaning by 'pseudo force'?

Determine gravitational potential from gravitational potential energy?

On which factors does the mean free path depend?

The velocity of a body is given by the equation v = b/t + ct² + dt³. Find the dimensional formula for b.

State the factors on which the position of the CM of a rigid body depends.

What is the relation between the velocity and temperature?

In the equation: y = a sin ( \(\omega\) t- kx), t and x stand for time and distance respectively. Obtain the dimensional formula for \(\omega\) and k,

A bomb of mass 30 kg, initially at rest explodes into three pieces of masses. m₁ = m₂= 20 kg. If the kinetic energy of two pieces (m₁ = m₂) is 400 J. Calculate the kinetic energy of the third piece.

The maximum acceleration of a simple harmonic oscillator is Q_o and the maximum velocity is V_o. What is the displacement amplitude?

Define the term relative velocity. How can it be obtained vectorially, when the two objects with uniform velocities move in same direction.

State conservation of angular momentum

The sound level from a musical instrument playing is 50 dB. If three identical musical instruments are played together then compute the total intensity. The intensity of the sound from each instrument is 10-12 W m^-2.

A body floats in water with 40% of its volume outside water. When the same body floats in oil 60% of its volume, remains outside oil. What is the relative density of the oil?

Derive the expression of pressure exerted by the gas on the walls of the container.

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11th Physics Important 3 Mark Question Papers

St. Britto Hr. Sec. School - Madurai

11th Physics Important 3 Mark Question Papers-Aug 2020

Part - A

Generic 3 - Answer All Question

Find Torque about an Axis.

Draw and explain the variations of force of friction vs applied force graphically.

What do you understand by the term parallax angle?

The radius of gold nucleus is 41.3 fermi. Express its volume in m3.

How do you differentiate solid liquid & gas?

How does the internal energy of a thermodynamic system change?

Write down the kinematic equations for angular motion.

Is the acceleration of a particle in circular motion not always towards the centre. Explain.

A force of 36 dynes is inclined to the horizontal at an angle of 60°. Find the acceleration in a mass of 18 g that moves in a horizontal direction.

Derive the ratio of two specific heat capacities of monoatomic, diatomic and triatomic molecules.

What is the meaning by 'pseudo force'?

Determine gravitational potential from gravitational potential energy?

On which factors does the mean free path depend?

The velocity of a body is given by the equation v = b/t + ct2 + dt3. Find the dimensional formula for b.

State the factors on which the position of the CM of a rigid body depends.

What is the relation between the velocity and temperature?

In the equation: y = a sin ( \(\omega\) t- kx), t and x stand for time and distance respectively. Obtain the dimensional formula for \(\omega\) and k,

A bomb of mass 30 kg, initially at rest explodes into three pieces of masses. m1 = m2 = 20 kg. If the kinetic energy of two pieces (m1 = m2) is 400 J. Calculate the kinetic energy of the third piece.

The maximum acceleration of a simple harmonic oscillator is Qo and the maximum velocity is Vo. What is the displacement amplitude?

Define the term relative velocity. How can it be obtained vectorially, when the two objects with uniform velocities move in same direction.

State conservation of angular momentum

The sound level from a musical instrument playing is 50 dB. If three identical musical instruments are played together then compute the total intensity. The intensity of the sound from each instrument is 10-12 W m-2 .

A body floats in water with 40% of its volume outside water. When the same body floats in oil 60% of its volume, remains outside oil. What is the relative density of the oil?

Derive the expression of pressure exerted by the gas on the walls of the container.

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The radius of gold nucleus is 41.3 fermi. Express its volume in m³.

The velocity of a body is given by the equation v = b/t + ct² + dt³. Find the dimensional formula for b.

A bomb of mass 30 kg, initially at rest explodes into three pieces of masses. m₁ = m₂= 20 kg. If the kinetic energy of two pieces (m₁ = m₂) is 400 J. Calculate the kinetic energy of the third piece.

The maximum acceleration of a simple harmonic oscillator is Q_o and the maximum velocity is V_o. What is the displacement amplitude?

The sound level from a musical instrument playing is 50 dB. If three identical musical instruments are played together then compute the total intensity. The intensity of the sound from each instrument is 10-12 W m^-2.