Matric Notes Physics 9th

The number of base units in SI are:

Which one of the following unit is not a derived unit?

Amount of a substance in terms of number is measured in:

An interval of 200µs equivalent to:

1. 0.2s
2. 0.02s
3. 2x10^-4s
4. 2x10^-6s

Which one of the following is the smallest quantity?

Which instrument is most suitable to measure the internal diameter of a test tube?

A student claimed the diameter of wire as 1.032cm using Vernier Caliper. Upto what extent do you agree with it?

A measuring cylinder is used to measure.

A student noted the thickness of glass sheet using screw gauge. On the main scale it reads 3 divisions white 8th division on the circular scale conincides with index line. Its thickness is.

Significant figures in an expression are.

A body has translatory motion if it moves along a

The motion of a body about an axis is called

Which of the following is a vector quantity?

If an object is moving with constant speed then its distance time graph will be a straight line.

A straight line parallel to time-axis on distance-time graph tells that the object is

The speed-time graph of a car is shown in figure, which of the following statement is true?

Which one of the following graphs is representing uniform acceleration?

By dividing displacement of a moving body with time, we obtain

A ball is thrown vertically upward. Its velocity at the highest point is:

A train is moving at a speed of 36kmh^-1. Its speed expressed in ms^-1:

A change in position from point A to B is called:

A car starts from rest. It acquires a speed of 25ms^-1 after 20s. The distance moved by the car during this time is:

Newton's first law of motion is valid in the absence of:

Inertia depends upon:

A boy jumps out of moving bus there is danger for him to fall:

A string is stretched by two equal and opposite force 10N each. The tension in the string is:

The mass of a body:

Two bodies of masses m1 and m2 attached to the ends of an inextensible string passing over a frictionless pulley such that both move vertically. The acceleration of the bodies is:

Which of the following is the unit of momentum?

When horse pulls a cart, the action is the:

Which of the following material lowers friction when pushed between metal plates?

Two equal but unlike parallel forces having different lines of action produce:

The number of forces that can be added by head to tail rule are:

The number of perpendicular components of a force are:

A force of 10N is making an angle of 30o with the horizontal. Its horizontal component will be:

A couple is formed by:

A body is in equilibrium when its:

A body is in neutral equilibrium when its center of gravity:

Racing cars are made stable by:

Earth's gravitational force of attraction vanishes at:

Value of g increases with the:

The value of g at a height one Earth's radius above the surface of the Earth is:

The value of g on moon's surface is 1.6ms(-2). What will be the weight of a 100kg body on the surface of the moon?

The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth is:

The orbital speed of a low orbit satellite is:

The work done will be zero when the angle between the force and the distance is:

1. 45^o
2. 60^o
3. 90^o
4. 180^o

If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be:

If the velocity of a body becomes double, then its kinetic energy will be:

The work done in lifting a brick of mass 2kg through a height of 5m above ground will be:

The kinetic energy of a body of mass 2 kg is 25 J. Its speed is:

1. 4 ms^-1
2. 12.5 ms^-1
3. 25 ms^-1
4. 50 ms^-1

Which one of the following converts light energy into electrical energy?

When a body is lifted through a height h, the work done on it appears in the form of its:

The energy stored in coal is:

The energy stored in a dam is:

In Einstein's mass-energy equation, c is:

In which of the following state molecules do not leave their position?

Which of the substance is the lightest one?

SI unit of pressure is pascal, which is equal to:

1. 10⁴ Nm^-2
2. 1 Nm^-2
3. 10² Nm^-2
4. 10³ Nm^-2

What should be the approximate length of a glass tube to construct a water barometer?

According to Archimedes, up-thrust is equal to:

The density of a substance can be found with the help of:

According to Hooke's law:

The following force-extension graphs of a spring are drawn on the same scale. Answer the questions given below from (8) to (10).

Which graph does not obey Hooke's law as shown in above graph.

The following force-extension graphs of a spring are drawn on the same scale. Answer the questions given below from (8) to (10).

Which graph gives the smallest value of spring constant.

The following force-extension graphs of a spring are drawn on the same scale. Answer the questions given below from (8) to (10).

Which graph give the largest value of spring constant.

Water freezes at:

1. 0^oF
2. 32^oF
3. -273K
4. 0K

Normal human body temperature is:

1. 15^oC
2. 37^oC
3. 37^oF
4. 98.6^oC

Mercury is used as thermometric material because it has:

Which of the following material has large specific heat?

Which of the following material has large value of temperature co-efficient of linear expansion?

What will be the value of β for a solid for which α has a value of 2 x 10^-5 K^-1?

1. 2 x 10^-5 K^-1
2. 6 x 10^-5 K^-1
3. 8 x 10^-15 K^-1
4. 8 x 10^-5 K^-1

A large water reservoir keeps the temperature of nearby land moderate due to:

Which of the following affects evaporation?

In solids, heat is transferred by:

What happens to the thermal conductivity of a wall if its thickness is doubled?

Metals are good conductor of heat due to the:

In gases, heat is mainly transferred by:

Convection of heat is the process of heat transfer due to the:

False ceiling is done to:

Rooms are heated using gas heaters by:

Land breeze blows from:

Which of the following is a good radiator of heat?

The unit of electric current is:

Study of the structure and properties of atom is called:

The eleventh general conference was held in Paris in:

The least count of vernier calipers is:

In screw gauge if zero of circular scale behind the index line than zero error is:

The study of internal structure of Earth is called:

One cubic meter is equal to:

Least count of meter ruler is:

Least count of digital stop watch is:

Least count of mechanical stop watch is:

One mega is equal to:

1. 10³
2. 10⁴
3. 10⁵
4. 10⁶

One tera is equal to:

1. 10^-12
2. 10^-18
3. 10¹²
4. 10^-12

A physical quantity possesses characteristics:

Least count of screw gauge is:

Quantities which are completely described by magnitude only are:

Quantities which are completely described by magnitude and direction are:

Acceleration of a body moving with uniform velocity is:

LIDAR gun is used to calculate the vehicle's:

Slope of speed time graph represents:

Brownian motion is an example of:

To and fro motion of a body about its mean position is called:

The motion of a body in straight line is:

Speed of falcon is:

1. 100 kmh^-1
2. 200 kmh^-1
3. 300 kmh^-1
4. 400 kmh^-1

Average speed of cheetah is:

1. 60 kmh^-1
2. 75 kmh^-1
3. 70 kmh^-1
4. 80 kmh^-1

Unit of speed and velocity is:

1. ms^-1
2. ms
3. ms^-2
4. ms²

Unit of acceleration is:

1. ms^-1
2. ms
3. ms^-2
4. ms²

Rate of change of velocity is:

Paratrooper while coming down attains a velocity called:

Velocity of freely falling bodies moving upward:

Acceleration of freely falling bodies on the surface of Earth is:

1. 5 ms^-2
2. 10 ms^-2
3. 15 ms^-2
4. 20 ms^-2

Law of inertia is also called:

Unit of momentum is:

1. kgms^-2
2. kgms^-1
3. Ns^-1
4. Ns^-2

Action and reaction always act on:

Weight is measured by:

The rate of change of momentum is equal to:

The force which opposes the motion is called:

Force which compels a body to move in a circle is called.

Co-efficient of friction between tyre and dry road is:

1 Newton = __ .

1. 1 kg ms^-2
2. 1 kg ms
3. 1 kg m^-1s^-2
4. 1 kg^-1m^-1s^-1

The weight of boy is 147N. Its mass will be __ when g = 10ms^-2.

Product of mass and velocity of a body is called:

In isolated system the momentum after collision of two bodies:

Rolling friction is __ than sliding friction.

Co-efficient of friction is equal to:

1. F_s R
2. R / F_s
3. F_s + R
4. F_s / R

The maximum value of friction is:

Center of gravity of sphere is at:

The center of gravity of irregular shaped body can be found with the help of:

In right angle triangle, length of base is 4 cm and its hypotenuse is 5cm, then length of perpendicular is:

Net torque acting on a rotating body with uniform speed is:

If F_y = 4N and F_x = 3N, what is the magnitude of resolution of force.

The value of tan45^o is:

Complete equation F_y/F_x =:

First condition of equilibrium is:

Turning effect of a force is called:

sin45^o is:

Unit of torque is:

1. Nm^-2
2. Ncm
3. Nm^-1
4. Nm

The parallel forces which have same direction are called:

The conditions of equilibrium are:

The value of 'g' on sun is:

1. 8.87 ms^-2
2. 25.94 ms^-2
3. 274.2 ms^-2
4. 9.8 ms^-2

The value of g is maximum at:

The radius R of the Earth is:

1. 6 x 10¹⁸m
2. 6.4 x 10⁶m
3. 6.4 x 10⁸m
4. 6.4 x 10¹²m

Speed of satellites of GPS around Earth is:

1. 3.87 ms^-1
2. 387 Kms^-1
3. 3.87 Kms^-1
4. 38.7 Kms^-1

Earth completes one rotation about its own axis in:

Moon completes its one revolution around Earth in:

The unit of gravitational constant is:

1. Nm²kg
2. Nm²kg^-2
3. Nm²kg^-1
4. Nm²

The Earth attracts a body with a force equal to its:

A satellite revolving around very close to Earth has speed nearly:

1.  5 kms^-1
2. 8 kms^-1
3. 11 kms^-1
4. 14 kms^-1

Moon is nearly ___ km away from Earth:

GPS system consist of __ satellite:

The value of 'g' on the surface of moon is:

1. 1.62 ms^-1
2. 10 ms^-1
3. 20 ms^-1
4. zero

Mass of Earth is:

1. 6 x 10²⁴kg
2. 7 x 10²⁴kg
3. 6 x 10²⁵kg
4. 7 x 10²⁵kg

Near the Earth surface, gravitational field strength is:

1. 1 N kg^-1
2. 10 N kg^-1
3. 100 N kg^-1
4. 1000 N kg^-1

Power is equal to:

1. W / t²
2. W² / t
3. W / t
4. W x t

Stretched bow has type of energy:

One horse power is equal to:

Solar cells are also known as:

Rate of doing work is called:

Work is equal to:

A body possess __ if it is capable to do work.

An ideal system gives output:

Fossil fuels are usually:

Tensile strain produces change in:

Unit of strain is:

1. Nm^-2
2. Nm
3. N
4. No unit

Hydraulic press is a machine which works on:

In SI system, unit of density is:

1. kgm^-1
2. kgm^-3
3. kgm^-2
4. kgm

Which of the following works on Pascal's law?

How many times Mercury is denser than water?

Atmospheric pressure is measured by an instrument called.

At sea level, the atmospheric pressure is about:

Density of water is:

1. 5500 kgm^-3
2. 10000 kgm^-3
3. 1000 kgm^-3
4. 330 kgm^-3

Most of the matter that fills the universe is in state:

Unit of Specific heat is:

1. J
2. Jkg^-1
3. Jkg^-1K^-1
4. JkgK

The relation between co-efficient of linear expansion and volumetric expansion is:

Degree of hotness or coldness of a body is called:

There are __ types of temperature scales:

SI Unit of temperature is:

Specific heat of water is ___ Jkg^-1K^-1.

The value of latent heat of fusion of ice is:

1. 3.36 x 10^-5 Jkg^-1
2. 3.36 x 10⁵ Jkg^-1
3. 3.36 x 10⁶ Jkg^-1
4. 3.36 x 10⁹ Jkg^-1

The value of latent heat of vaporization of water is:

1. 2.36 x 10⁶ Jkg^-1
2. 2.36 x 10⁵ Jkg^-1
3. 2.36 x 10^-6 Jkg^-1
4. 2.36 x 10⁹ Jkg^-1

Which gas is used in spite of Freon gas in refrigerator?

1. CO₂
2. H₂
3. NH₃
4. N₂

Water on cooling below 4^oC begins to:

Evaporation causes:

The range of clinical thermometer is:

1. 90^oC-106^oC
2. 35^oC-42^oC
3. 100^oC-132^oC
4. 24^oC-35^oC

1. Number of ways to transfer heat from one place to another:

Unit of thermal conductivity is:

1. WmK
2. Wm^-1K^-1
3. Wm^-1
4. None of these

Thermal conductivity of iron is Wm^-1K^-1:

Sea breeze blows from sea to land during:

Land breeze blows from land to sea during:

The process in which heat is transfer due to actual movement of molecule is called:

Which one of the following is a bad conductor?

Thermos Flask is used to maintain:

The thermal conductivity of brick is:

1. 0.8 Wm^-1K^-1
2. 1.7 Wm^-1K^-1
3. 0.6 Wm^-1K^-1
4. 0.2 Wm^-1K^-1

Leslie cube has __ faces: