PHY101 Final Term Live Quiz by Miss Mehwish

PHY101 · Final Term (Live Quiz) · Past Papers for Mids./Finals are also Available

Q1. Which of the following statements about floating objects is correct?

The object's density is greater than the density of the fluid on which it floats. The displaced volume of fluid is greater than the volume of the object. The object's density is equal to the density of the fluid on which it floats. The buoyant force equals the object's weight.

2. Suitable units for the gravitational constant G are:

kgem/s2 Nes/m

m3/ (kg*s2)

m/s2

3. Imagine a hypothetical scenario where shock waves could be produced. A gentle breeze blowing across a pond. A person clapping their hands. A supersonic aircraft breaking the sound barrier. A flashlight producing light waves.

4. A thermometer indicates 98.6?C.It may be:

Outdoors on a cold day In a comfortable room

In a cup of hot tea

In a normal person's mouth

5. The direction of angular momentum of a body moving in a circle is: Perpendicular to the plane of circle Radially inward Radially outward Along the tangent

6. Hooke's Law states that the force in a spring is proportional to:

The equilibrium length The mass attached The square of displacement

The displacement from equilibrium

7. The equation for time dilation is given by:

At' = 7 At

At = —

t= At At ==

8. In an adiabatic process:

The energy absorbed as heat equals the work done by the environment on the system The energy absorbed as heat equals the work done by the system on its environment

The work done by the environment on the system equals the change in internal energy

The absorbed as heat equals the change in internal energy

9. A net torque applied to a rigid object always tends to produce:

linear acceleration rotational inertia

angular acceleration

rotational equilibrium

Q1. The angular velocity of an object in circular motion is doubled while maintaining a constant radius, how does the centripetal acceleration change?

o o It quadruples o It becomes half o It remains the same

2. The momentum of an object at a given instant is independent of its:

o velocity o mass o speed o

3. If electric and gravitational force on an electron in a uniform electric field balance each other, then the intensity of electric field will be: o q/mg o m/ag o mg/q ✅ o qg/m
4. A rod with moment of inertia of 5 kgm² and oscillates with a period of 3.14 seconds, its torsion constant "k" is: o 15 Nm o 0.62 Nm o 20 Nm