SS2: PHYSICS – 2nd Term Exam

_____________ friction is the force of friction experienced by a body when it is at rest.

_____________ friction is the value of the limiting friction just before slipping occurs.

____________friction is the force of friction experienced by a body when it is in motion.

When a body slides over another, the frictional force experienced by the body is known as ____________ friction.

_____________ is a measure of the resistance offered to the sliding one layer of lubricant over an adjacent layer.

What is the direction in which the limiting friction acts?

If the area of contact between two surfaces is increased by two times, what will be the effect on the force of friction?

The ratio of frictional force to normal reaction is known as _______

Which of the following is true regarding limiting friction?

What is the maximum value of static friction?

A body of mass 1 kg is kept on a rough surface having coefficient of friction = 0.25 being pulled by a force of 2N, what will be the value of frictional force in N? (Take g = 9.8 m/s2)

A body, resting on a rough horizontal plane required a pull of 181 N inclined at 30° to the plane just to move it. It was recorded that a push of 220 N inclined at 30° to the plane just moved the body. Estimate the weight of the body in N.

The force of friction always acts in a direction, ___________ to that in which the body tends to move.

The magnitude of the force of friction is ____________ to the force, which tends the body to move.

Which of the following statements regarding laws governing the friction between dry surfaces are correct?

Four movable pulleys are arranged as in the first system. If the weight of each pulley is 5 N, calculate the effort which can lift a load of 10 kN.

A machine of velocity ratio 5 is used in lifting a load with an effort of 500N. if the machine is 80% efficient, determine the magnitude of the load

A plane inclined at 300 to the horizontal has an efficiency of 50%. Calculate the force parallel to the plane required to push a load of 120 N uniformly up the plane.

Two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is called

The condition of correct gearing is

The face of the tooth is the

Bimetallic strips are employed in ________ thermometers.

Resistance thermometer generally makes use of ________ for the measurement of resistance.

Which of these materials is not used for resistance coils?

Liquid in glass thermometers are filled with ________

The absolute thermodynamic temperature scale is also known as

In defining the temperature scale, the standard reference point is taken as

The Kelvin temperature is numerically equal to the _____ and may be measured by means of a _____

What is the standard fixed point of thermometry?

Which of the following is chosen as the standard thermometric substance?

Absolute zero temperature is approximately equal to?

What is the value of 100^oC in degree Fahrenheit?

What is the 100^oF in degree Celsius?

At which temperature is, the centigrade and Fahrenheit scale equal?

A thermometer has its stem marked in millimeter instead of degree Celsius. The lower fixed point is 30 mm and the upper fixed point is 180 mm. calculate the temperature in degree Celsius when the thermometer reads 45 mm.

A mercury – in – glass thermometer reads – 20at the ice point and 100 at the steam point. Calculate the Celsius temperature corresponding to 70 on the thermometer.

On which factor does the average kinetic energy of gas molecules depend?

What is the average velocity of the molecules of an ideal gas?

At Boyle’s temperature?

For Boyle’s law to hold good, the gas should be ___________

A gas behaves as an ideal gas at ___________

The temperature of gas is held constant, while its volume is decreased. The pressure exerted by the gas on the walls of the container increases, because its molecules ___________

At constant volume temperature is increases, then ___________

The surface of a lake is at 2°C and the depth of the lake is 20m. Find the temperature of the bottom of the lake?

Assertion: Air pressure in a car tyre increases during driving.
Reason: Absolute zero temperature is not zero energy temperature.

If a given mass of gas occupies a volume of 10cm³ at 1 atmospheric pressure and temperature 100°C, what will be its volume at 4 atmospheric pressure, the temperature being the same?

If an ideal gas has a volume V at 27°C and it is heated at a constant pressure, so that its volume becomes 1.5V, then the value of final temperature is?

What type of motion is associated with the molecules of gas?

An ideal gas is heated from 27°C to 627°C at constant pressure. If initial volume was 4m³, then the final volume of the gas will be?

The absolute zero is the temperature, at which?

The relation PV=RT can describe behaviour of the real gas at ___________

The amount of heat required to raise the temperature of 1 kg mass of that substance through 1K is called its

In a laboratory, bunsen burner is used to increase the temperature of lime from 10 °C to 50 °C with the thermal energy of 80000 J. If the mass of the lime is 20 kg the specific heat capacity of the lime would be

The amount of energy required to change the liquid to gas and vice versa without any change in temperature is termed as

Latent heat stands for

An object has a specific latent heat of 24 Jkg ^-1 and the mass of the object is 2 kg. The latent heat of the object would be

Which of the following statement is true about vapor pressure of a liquid?

Which of the following equation correctly depicts the relation between the vapor pressure of a liquid and it’s temperature?

Which of the following is the condition for the boiling of a liquid?

Three liquids 1, 2, and 3 with vapor pressures V₁, V₂ and V₃ respectively, are kept under same pressure. If V₁ > V₂ > V₃, which liquid will start boiling early?

Equal amount of a particular liquid is poured into three similar containers, namely 1, 2 and 3, at a temperature of T₁, T₂ and T₃ respectively. If T₁ < T₂ < T₃, the liquid in which container will have the highest vapor pressure?

Which of the following is correct regarding the formation and collapse of vapor bubbles in a liquid?

Which of the following is a representation of Gay-Lussac’s law?

Which of the following term does not involve in ideal gas law?

Which of the following is not true about ideal gas molecules?

What is the pressure of a 5 liter/mole ideal gas at temperature 27^oC? (Given that n = 1 and R = 0.0821)

When a pebble is dropped into a pond of still water, what happens?

What are the essential properties a medium must possess for the propagation of mechanical waves?

Which of the following waves can be transmitted through solids, liquids and gases?

What is the most fundamental property of wave?