11th Physics Important 5 Mark Question Papers

St. Britto Hr. Sec. School - Madurai

11th Physics Important 5 Mark Question Papers-Aug 2020

Time : 2.00 Hours

Part - A

Generic 5 - Answer All Question

Find (i) acceleration (ii) speed of the sliding object using free body diagram.

Prove that at points near the surface of the Earth, the gravitational potential energy of the object is U = mgh.

\(\)\(A ⃗=2i ̂+3j ̂-2k ̂\);\(B ⃗=i ̂-2j ̂+2k ̂ \) Find

\(a)A ⃗+B ⃗ b) |A ⃗+B ⃗ | c) A ⃗-B ⃗ d) |A ⃗-B ⃗ | e)A ⃗∙B ⃗ f)|A ⃗∙B ⃗ | g)A ⃗×B ⃗ h) |A ⃗×B ⃗ | i) |A ⃗ | \)j)\(θ\)

The moment of inertia of a thin rod of mass 'M' and length 'I' about an axis passing through its centre is \(\frac { M{ l }^{ 2 } }{ 12 } \). Calculate the moment of inertia about a parallel axis through end of rod.

A particle of mass (m) is moving with constant velocity (v). Show that its angular momentum about any point remains constant throughout the motion.

If the value of universal gravitational constant in SI is 6.6\(\times\)10^-11 Nm^-2 kg^-2,then find its value in CGS System.

Find the angle between two vectors \(A=\hat { i } +2\hat { j } -\hat k\quad and\quad B=-4\hat { i } +\hat { j } -2\hat k\)

In the section 3.7.3 (Banking of road) we have not included the friction exerted by the road on the car. Suppose the coefficient of static friction between the car tyre and the surface of the road is, calculate the minimum speed with which the car can take safe turn? When the car takes turn in the banked road, the following three forces act on the car.
(1) The gravitational force mg acting downwards.
(2) The normal force N acting perpendicular to the surface of the road.
(3) The static frictional force f acting on the car along the surface.

A transverse harmonic wave on a string is described by y(x, t) =5.0 sin (48t + 0.0264x + ), where x and yare in em and t in sec. The positive direction of x is from left to right.
(a) What are its amplitude and frequency?
(b) What is the least distance between two success in crests in the wave?

A particle of mass 5 units is moving with a uniform speed of v = 3\(\sqrt{2}\)units in the XOY plane along the line y = x + 4. Find the magnitude of angular momentum.

Explain the resolution of vectors in three dimensional co-ordinates.

One end of a U-tube containing mercury is connected to a suction pump and the other end to atmosphere. A small pressure difference is maintained between the two columns. Show that, when the suction pump is removed, the liquid column of mercury in the U-tube executes simple harmonic motion.

Determine that vector which when added to the resultant of \(A=2\hat { i } -4\hat { j } +6\hat { k } \) and \(B=\hat { i } +3\hat { j } -3\hat { k } \) gives unit vector along z-direction.

What is the power of an engine which can lift 20 metric ton of coal per hour from a mine 30 metres deep?

How will you confirm Newton's third law by the way of Two Bodies in Contact on a Horizontal Surface?

A body of mass of 3 kg initially at rest makes under the action of an applied horizontally force of 10 N on a table with co-efficient of kinetic friction = 0.3, then what is the workdone by the applied force in 10s:

Consider the Earth as a homogeneous sphere of radius R and a straight hole is bored in it through its centre. Show that a particle dropped into the hole will execute a simple harmonic motion such that its time period is \(T=2\pi \sqrt { \frac { R }{ g } } \).

Find the vector sum of three vectors \(\overrightarrow { A } ,\overrightarrow { B } and\overrightarrow { C } \) , using analytical method.

Derive Meyer's relation.

Motor volume is occupied 1 mole of any (ideal) gas at standard temperature and pressure. Show that it is 22.4 litres.

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11th Physics Important 5 Mark Question Papers

St. Britto Hr. Sec. School - Madurai

11th Physics Important 5 Mark Question Papers-Aug 2020

Part - A

Generic 5 - Answer All Question

Find (i) acceleration (ii) speed of the sliding object using free body diagram.

Prove that at points near the surface of the Earth, the gravitational potential energy of the object is U = mgh.

\(\)\(A ⃗=2i ̂+3j ̂-2k ̂\);\(B ⃗=i ̂-2j ̂+2k ̂ \) Find \(a)A ⃗+B ⃗ b) |A ⃗+B ⃗ | c) A ⃗-B ⃗ d) |A ⃗-B ⃗ | e)A ⃗∙B ⃗ f)|A ⃗∙B ⃗ | g)A ⃗×B ⃗ h) |A ⃗×B ⃗ | i) |A ⃗ | \)j)\(θ\)

The moment of inertia of a thin rod of mass 'M' and length 'I' about an axis passing through its centre is \(\frac { M{ l }^{ 2 } }{ 12 } \). Calculate the moment of inertia about a parallel axis through end of rod.

A particle of mass (m) is moving with constant velocity (v). Show that its angular momentum about any point remains constant throughout the motion.

If the value of universal gravitational constant in SI is 6.6\(\times\)10-11 Nm-2 kg-2,then find its value in CGS System.

Find the angle between two vectors \(A=\hat { i } +2\hat { j } -\hat k\quad and\quad B=-4\hat { i } +\hat { j } -2\hat k\)

A transverse harmonic wave on a string is described by y(x, t) =5.0 sin (48t + 0.0264x + ), where x and yare in em and t in sec. The positive direction of x is from left to right. (a) What are its amplitude and frequency? (b) What is the least distance between two success in crests in the wave?

A particle of mass 5 units is moving with a uniform speed of v = 3\(\sqrt{2}\)units in the XOY plane along the line y = x + 4. Find the magnitude of angular momentum.

Explain the resolution of vectors in three dimensional co-ordinates.

One end of a U-tube containing mercury is connected to a suction pump and the other end to atmosphere. A small pressure difference is maintained between the two columns. Show that, when the suction pump is removed, the liquid column of mercury in the U-tube executes simple harmonic motion.

Determine that vector which when added to the resultant of \(A=2\hat { i } -4\hat { j } +6\hat { k } \) and \(B=\hat { i } +3\hat { j } -3\hat { k } \) gives unit vector along z-direction.

What is the power of an engine which can lift 20 metric ton of coal per hour from a mine 30 metres deep?

How will you confirm Newton's third law by the way of Two Bodies in Contact on a Horizontal Surface?

A body of mass of 3 kg initially at rest makes under the action of an applied horizontally force of 10 N on a table with co-efficient of kinetic friction = 0.3, then what is the workdone by the applied force in 10s:

Consider the Earth as a homogeneous sphere of radius R and a straight hole is bored in it through its centre. Show that a particle dropped into the hole will execute a simple harmonic motion such that its time period is \(T=2\pi \sqrt { \frac { R }{ g } } \).

Find the vector sum of three vectors \(\overrightarrow { A } ,\overrightarrow { B } and\overrightarrow { C } \) , using analytical method.

Derive Meyer's relation.

Motor volume is occupied 1 mole of any (ideal) gas at standard temperature and pressure. Show that it is 22.4 litres.

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\(\)\(A ⃗=2i ̂+3j ̂-2k ̂\);\(B ⃗=i ̂-2j ̂+2k ̂ \) Find

\(a)A ⃗+B ⃗ b) |A ⃗+B ⃗ | c) A ⃗-B ⃗ d) |A ⃗-B ⃗ | e)A ⃗∙B ⃗ f)|A ⃗∙B ⃗ | g)A ⃗×B ⃗ h) |A ⃗×B ⃗ | i) |A ⃗ | \)j)\(θ\)

If the value of universal gravitational constant in SI is 6.6\(\times\)10^-11 Nm^-2 kg^-2,then find its value in CGS System.

A transverse harmonic wave on a string is described by y(x, t) =5.0 sin (48t + 0.0264x + ), where x and yare in em and t in sec. The positive direction of x is from left to right.
(a) What are its amplitude and frequency?
(b) What is the least distance between two success in crests in the wave?