Physics/Physics MCQs Sample Test,Sample questions

Question:
A cycle tyre bursts suddenly is an example of__:

1.Isothermal process

2.Adiabatic process

3. Isochoric process

4. Isoboric process


Question:
A light wave is incident over a plane surface with velocity x. After reflection the velocity becomes :

1.x 2

2. x

3.2x

4.x 4


Question:
Acceleration due to gravity on a planet decreases with __:

1.decrease in radius of the planet

2.increase in mass of the planet

3.decrease in mass of the body

4.increase in altitude from surface of the planet


Question:
According to special theory of relativity the mass of a particle

1. increases with increase in velocity with respect to an observer.

2.decreases with increase in velocity.

3.decreases with decrease in velocity.

4. is independent of its velocity.


Question:
Amount of water vapour in the atmosphere is measured in terms of

1.Humidity

2.Droplets

3.Smog

4.All of the above


Question:
Burns caused by steam are much severe than those caused by boiling water because__:

1. Steam pierces through the pores of body quickly

2.Steam has latent heat

3.Steam is gas and engulfs the body quickly

4. Temperature of steam is higher


Question:
If cream is removed from milk, its density__:

1.Increases

2.Decreases

3.Remains the same

4.May increase or decrease


Question:
In context with electromagnetism, which among the following is a correct definition of Permeability?

1.Ability of a material to repel magnetic field within itself

2.Ability of a material to support the formation of a magnetic field within another body

3.Ability of a material to support the formation of a magnetic field within itself

4.Ability of a material to create magnetic dipoles


Question:
In recent times, the “dynamic brake system” is becoming popular in modern railways. The dynamic brake system coverts Kinetic energy to__:

1.Potential energyc

2.Electricity

3. Sound energy

4.Magnetic energy


Question:
In the equation of motion v = u + at, u represents _____.

1.initial velocity

2. final velocity

3.kinetic energy

4.potential energy


Question:
Pressure Cooker cooks faster because__:

1.boiling point decreases with rise of pressure

2.it cooks the food at low pressure

3.higher temperature is attained for cooking

4.the material of the cooker is a good conductor


Question:
Rainbow is formed due to which of the below phenomena?

1.refraction and dispersion

2.scattering and refraction

3.diffraction and refraction

4. refraction and reflection


Question:
The force acting on a body for a short time are called as:

1.Average force

2.Momentum

3.Impulse

4.Tension


Question:
The mercury and sodium street lamps light up because of :

1.Atomic emission

2.Atomic absorption

3. Electron emission

4.Electron absorption


Question:
The unit of noise pollution (level) is :

1.decibel

2.decimal

3.ppm

4.None of these


Question:
What do we call the cell that converts the potential energy from a fuel into electricity?

1.Electrolytic cell

2.Galvanic cell

3.Dry cell

4.Fuel cell


Question:
What do we call the long-sightedness caused by loss of elasticity of the lens of the eye?

1.Myopia

2.Presbyopia

3.Hypermetropia

4.None


Question:
What is the device used to measure the cell potential?

1.Ammeter

2.Voltmeter

3.Wattmeter

4.None of the above


Question:
What is the relationship between the frequency and the pitch of a sound wave?

1. Higher the frequency, higher the pitch

2.Lower the frequency, higher the pitch

3.Pitch is not dependant on the frequency

4.None of the above


Question:
What is the relationship between the magnetisation of a paramagnetic material and the absolute temperature?

1.they are directly proportional to each other

2.they are inversely proportional to each other

3.they are independent of each other

4.None


Question:
What is the SI unit of acceleration due to gravity?

1.ms-2

2. ms-3

3. Kgms-2

4. ms-1


Question:
What is the SI unit of frequency?

1.Newton

2.Watt

3.Farad

4.Hertz


Question:
What is the SI unit of frequency?

1.Newton

2.Watt

3.Farad

4.Hertz


Question:
What is the value of Wien’s constant?

1.2.9 × 10–1 m K

2.2.9 × 10–2 m K

3.2.9 × 10–3 m K

4.2.9 × 10–4 m K


Question:
When a body falls from an aeroplane, there is increase in its__:

1.Kinetic energy

2.Mass

3.Acceleration

4.Potential energy


Question:
When a body is immersed in a liquid, the force acting on it is__:

1.Upthrust

2.Weight

3.Mass

4.Both


Question:
When hot liquid is poured into a thick glass tumbler, it cracks because glass__:

1. is a bad conductor of heat so only inner surface expands

2.has high temperature coefficient of expansion

3. has a very low specific heat

4.has low temperature coefficient of expansion


Question:
Which among the following is a correct definition of the Closed Fuel Cycle?

1.Preparation of fuel and subsequent processes during reactor operation

2.Closed Fuel Cycle refers to the process of separating the spent fuel

3.Closed Fuel cycle is the process in which spent fuel is reprocessed

4. Closed Fuel cycle is the process in which spent fuel is NOT reprocessed


Question:
Which among the following is true about conduction, convection and radiation mode of transfer of heat?

1.A Medium is required for conduction but not required for convection and radiation

2. A medium is required for conduction, convection and radiation

3.A medium is required for conduction and convection but not required for radiation

4.A medium is not required for conduction and convectio, radiation


Question:
Which among the following orbits are more prone to harms of space debris or space Junk in comparison to others?

1. Polar Sun Synchronous Orbit

2.Low Earth Orbit

3.Geosynchronous orbit

4.Geostationary Orbit


Question:
Which of the following conditions is true for two vectors to be collinear?

1.Equal magnitude

2.Same Direction

3.Acting along the parallel straight lines

4. Both a and c


Question:
Which of the following is an example of application of force?

1.when a body at rest starts moving

2. when a moving body stops

3.when moving body changes its direction

4.All of the above


Question:
Which of the following is correct about EMF of a cell?

1. it is the potential difference between the electrodes when current is flowing in the cell

2. it is the drift velocity of the electrons when there is no current in the cell

3. it is the potential difference between the electrodes when there is no current in the cell

4. None of the above


Question:
Which of the following is not a part of a CRT ?

1.Phosphor screen

2.Shadow mask

3. Electron gun

4.Gas plasma


Question:
Which of the following lie in the Tetra hertz frequency?

1.Visible Light and Infra Red

2. Infra Red and Microwaves

3.Microwaves and Radio Waves

4.Visible Light and Ultraviolet light


Question:
Which of the following represents Charles’ law?

1. Volume x Temperature = constant when Pressure is constant

2. Volume/Temperature = constant when Pressure is constant

3. Temperature = Volume when Pressure is constant

4. None of the above


Question:
Which of the following represents Pressure?

1. Force/Density

2. Force x Area

3.Force/Area

4.Force/ Acceleration


Question:
Which of the following represents the absolute zero temperature?

1.0° C

2.-100° C

3.-273.15° C

4.273.15° C


Question:
Which of the following represents the angular momentum of an electron as per Bohr’s model (h= Planck’s constant)?

1.h/?

2.nh/2?

3.2?nh

4.?nh


Question:
Which of the following represents the unit ampere?

1. Kg/metre

2.coulomb/metre

3.coulomb/second

4. Kg/coulomb


Question:
Which of these ratios give the viscosity of a fluid?

1. ratio of the shearing stress to the velocity gradient

2.ratio of the shearing stress to the weight of the fluid

3.ratio of the shearing stress to the density of fluid

4.ratio of the velocity gradient and shearing stress


Question:
Which one of the following is a non-dimensional quantity?

1.Gas constant

2.Strain

3.Co-efficient of viscosity

4. Planck’s constant


Question:
Who among the following is known to manufacture first Cyclotron?

1. Ernest Lawrence

2. Niels Bohr

3.Rutherford

4.Max Born


Question:
Why boiling point of water decreases at high altitudes?

1.Because of high temperature

2.Because of low atmospheric pressure

3.Because of low temperature

4.Because of high atmospheric pressure


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