BISE Multan · Class 11 · Physics · 2026 · First Annual · Group 1 · Old course

Ratio of prefix femto to Pico is:

Age of universe approximately is:

If $\vec{A}=2\widehat{i}-3\widehat{j}+\widehat{k}$, then magnitude of $\vec{A}$ is:

In which quadrant $-2\widehat{i}-2\widehat{j}$ lies?

Alternate unit to $\mathrm{k}\mathrm{g}\mathrm{m}{\mathrm{s}}^{-1}$ is:

Relation between height and time of flight for projectile is:

K.E of a body is $E$, its momentum is:

Ratio of escape velocity to critical velocity is:

A geostationary satellite occupies a longitude of:

$\rho gh$ in Bernoulli's equation has same unit as:

Distance covered by a body in one vibration is $16\mathrm{c}\mathrm{m}$, the amplitude is:

Radar transmits and receives:

Distance between node and antinode in stationary waves is equal to:

Polarization of light proves that light waves are:

Which is not essential component of spectrometer?

Efficiency of heat engine working between ${27}^{\circ }\mathrm{C}$ and ${327}^{\circ }\mathrm{C}$ will be:

Latent heat of fusion of ice is:

Add the masses given in $\mathrm{k}\mathrm{g}$ upto appropriate precision, $2.189$, $0.089$, $11.8$ and $5.32$.

Give the drawbacks to use the period of simple pendulum as a time standard.

The period of simple pendulum is measured by a stopwatch. What type of errors are possible in the time period?

Prove that $\sqrt{\mathrm{\ell }\mathrm{/}g}$ has the dimension of time.

If $x$ and $y$ components are negative and equal in magnitude, then resultant has the orientation in which coordinate and what will be the orientation?

The vector sum of three vectors gives a zero resultant. What can be the orientation of the vectors?

Can a body rotate about its centre of gravity under the action of its weight?

In rocket propulsion, how the problem of mass of fuel is overcome?

An object is thrown vertically upward. Discuss the sign of acceleration due to gravity, relative to velocity, while the object is in air.

Show that the range of projectile is maximum when projectile is thrown at an angle of ${45}^{\circ }$ with the horizontal.

A girl drops a cup from a certain height, which breaks into pieces. What energy changes are involved?

An object has $1\mathrm{J}$ of potential energy. Explain what does it mean?

Define and write relations for (a) average angular velocity (b) instantaneous angular acceleration.

What is rotational K.E? Write its relation. How is it practically used by flywheels?

Explain how many minimum geostationary satellites are required for global coverage of T.V. transmission. What should be their orientation?

Find moment of inertia of a rotating solid cylinder of mass $5\mathrm{k}\mathrm{g}$ and radius $0.20\mathrm{m}$.

Define viscosity. Explain how viscosity of liquids and gases is affected by increase in temperature?

Explain the working of carburetor of motor car using Bernoulli’s Principle.

Differentiate between linear frequency and angular frequency. How they are related to time period?

Can we realize an ideal simple pendulum? Explain.

Under what conditions does the addition of two simple harmonic motions produce a resultant which is also simple harmonic?

Differentiate between mechanical waves and electromagnetic waves.

Write principle of superposition of waves. How are stationary waves produced?

As a result of a distant explosion, an observer senses a ground tremor first and then hears the explosion. Explain the time difference.

What is function of semi-silvered glass plate in Michelson’s Interferometer?

Under what conditions two or more sources of light behave as coherent sources?

An oil film spreading over a wet footpath shows colours. Explain how does it happen?

How the light signal is transmitted through the optical fibre?

Why would it be advantageous to use blue light with a compound microscope?

What are the conditions for total internal reflection?

Prove that $W=P\mathrm{\Delta }V$.

What happens to the temperature of the room, when an aircondition is left running on a table in the middle of the room?

Specific heat of a gas at constant pressure is greater than specific heat at constant volume. Why?

Prove that the magnitude of relative velocity of approach is equal to the magnitude of relative velocity of separation in an elastic collision in one dimension?

A force $\vec{F}=(2\widehat{i}+3\widehat{j})$ units, has its points of application moved from the point $A(1,3)$ to the point $B(5,7)$. Find the work done.

Define Apparent weight. How Apparent weight changes in a lift? Explain.

A brick of mass $2.0\mathrm{K}\mathrm{g}$ is dropped from a rest position $5.0\mathrm{m}$ above the ground. What is its velocity at a height of $3.0\mathrm{m}$ above the ground?

State first law of thermodynamics. Explain its two applications.

How large must a heating duct be if air moving $3.0\mathrm{m}{\mathrm{s}}^{-1}$ along it can be replenish the air in a room of $300{\mathrm{m}}^3$ volume every $15\mathrm{m}\mathrm{i}\mathrm{n}$? Assume air’s density remains constant.

How stationary waves are produced in a stretched string? Derive expressions for $n$th mode frequency and wavelength.

A block of weighing $4.0\mathrm{k}\mathrm{g}$ extends a spring by $0.16\mathrm{m}$ from its unstretched position. The block is removed and a $0.50\mathrm{k}\mathrm{g}$ body is hung from the same spring. If the spring is now stretched and then released, what is its period of vibration?

Describe the diffraction of X-rays through crystals. Also describe the Braggs equation.

A converging lens of focal length $5.0\mathrm{c}\mathrm{m}$ is used as a magnifying glass. If the near point of the observer is $25\mathrm{c}\mathrm{m}$ and the lens is held close to the eye, calculate the distance of the object from the lens.