Physics Test 2

Electrons have negative charge and its mass is ----?

If the density of a cube is determined by measuring the mass and length of its side, and the maximum error in measurement of mass and length is 3% and 2% respectively, what will be the maximum error in the measurement of density?

The least distance of distinct vision for a normal eye is:

A pipe has a cross-sectional area of 20 cm², and water is flowing out of the pipe with a velocity of 5 m/s. What is the mass of water that exits the pipe in 1 second?

If a voltmeter measures 250V and frequency is 50Hz,what will be the peak value?

The Celsius scale starts from:

When momentum is equal to K. E. what is the velocity? The velocity of the object is

How many times per second will an incandescent lamp reach maximum brilliance when connected to a 50Hz source?

Kirchhoff’s first rule is:

Motion of projectile is _____________ dimensional.

The resistance between (+) and (-) of ideal Op- Amp is

Two vectors to be combined have magnitudes 60 N and 35 N. The correct answer for the magnitude of
their resultant will be:

If the error in the measurement of mass is 2% and the error in the measurement of velocity is 3%, then the error in the measurement of kinetic energy is

When a body moves in a circle, the angle between its linear velocity and angular velocity is always?

An ideal voltmeter would have an infinite

What is the acceleration experienced by a fog droplet as it falls downward?

The distance between two consecutive wave fronts is called:

Which of the following is not present in AC generator:

One mega watt hour is equal to.

An example of scalar quantity is

An accurate measurement of emf of a cell is made by

During charging of a capacitor, the ratio of instantaneous charge and maximum charge on plates of capacitors at t = RC is

The phase difference between coils of three phase A.C is

The blood pressure in the vessels is always:

Which of the following waves could be polarized?

Derived units have-----kinds?

Geo-stationary satellite completes one rotation around earth in.

The minimum number of unequal forces whose resultant will be zero

Temperature, pressure etc are converted into electronic informations by devices called

The application of mutual induction is a

The SI unit of power is

At center of earth acceleration of gravity is

Which expression is correct for the time period of a simple pendulum:

The half of uranium – 238 is

Pull of earth on a mass of 20 kg on the surface of the earth is

The Boolean expression X = A + B represents the logic operation of

Distance covered during one vibration of an oscillating body in term of amplitude A is:

The time period of a second's pendulum is?

When the bob of simple pendulum is at extreme position, it ha

Swing is produced to:

Distance covered during one vibration of an oscillating body in term of amplitude A is:

Beats can be heard when the difference of frequency is not more than:

The frequency of waves produced in microwaves oven is:

There are types of modulation.

A snooker ball moving with velocity v collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of the second snooker ball is:

If particles P and R, each having the same mass, are dropped from rest through the same potential difference, where P has a charge of +q and R has a charge of +9q, what is the resulting ratio of their speeds?

Soap film exhibit brilliant colors in sun light due to:

Work done on the body equals to the

The substance in which the atoms don’t form
magnetic dipole are called

When two forces of 20N and 30N act simultaneously on a body, what is the maximum possible magnitude of their resultant force?