Physics/G.K Question and Answer - Physics Set VII Sample Test,Sample questions

Question:
 We see the image of our face when we look into the mirror. It is due to:

1. Interference

2.Diffraction

3. Polarisation

4.Reflection


Question:
 What happens to the body on which work is done: 

1.It loses energy

2. It gains energy

3.No change in the energy

4.First it loses then it gain


Question:
 Which of the following device converts chemical energy in to electrical energy?

1.Battery

2.Loud Speaker

3. Solar Cell

4. Electric Motor


Question:
Anything which gives out light rays is called :

1.Real Image

2.Virtual Image

3.Object

4.Image


Question:
 A radio set of 60 watts runs for 50 hours. How many units of electrical energy are consumed in kWh?

1. 2 kWh

2. 3 kWh

3.4 kWh

4.2.5 kWh


Question:
 An incident ray is:

1. The point at which incident ray falls on the mirror.

2.The ray of light which is sent back by the mirror.

3.The ray of light which falls on the mirror surface.

4. The ray which makes right angle to the mirror surface.


Question:
 During a calendar year, the maximum numbers of lunar eclipse that can occur are:

1.2

2.3

3.4

4.None of the above


Question:
 In 1 minute how much energy does a 100 W electric bulb transfers?

1.100 J

2.600 J

3.3600 J

4.6000 J


Question:
 Name a metal which is the best reflector of light?

1. Gold

2. Silver

3. Iron

4.Magnesium


Question:
 What is the smallest unit of power?

1.Watt

2.Kilowatt

3.Horse power

4.Milliwatt


Question:
 When a parallel beam of incident light is reflected as a parallel beam in one direction, this reflection is known as:

1.Diffuse reflection

2.Interference

3.Diffraction

4.Regular reflection


Question:
 Which of the following are the two separate circuits in a house?

1. Lighting and power circuit

2.Open and closed circuit

3.Series and parallel circuit

4.None of the above


Question:
 Which of the following devices is run by power circuit in the house?

1.Tube-lights

2.Electric iron

3.Television

4.Radio


Question:
During lunar eclipse, the visible red colour is because of:

1. Dust in space

2.Dust in moon’s atmosphere

3. Dust in earth’s atmosphere

4.None of the above


Question:
How much electric potential does the live wire carry?

1.100 volts

2.150 volts

3. 185 volts

4.20 volts


Question:
In which unit is the electrical energy consumed by us recorded?

1.Volt

2.Kilowatt-minute

3. Kilowatt-hour

4.Kilowatt-second


Question:
Where do we use transformers?

1.Power stations

2.Radio sets

3.Television

4.All of the above


Question:
Joule is a unit of:

1.Work

2.Power

3.Momentum

4.None of the above


Question:
On an object the work done does not depend upon:

1.Displacement

2. Angle between force and displacement

3. Force applied

4. Initial velocity of an object


Question:
On which theory nature of light depends upon:

1.Wave theory

2.Particle theory

3. Both A and B

4.Only A


Question:
The commercial unit of Energy is:

1. Watt

2.Watt-hour

3.Kilowatt-hour

4.Kilowatt


Question:
The energy possessed by a body due to its position is called:

1.Kinetic Energy

2.Potential Energy

3.Mechanical Energy

4.Electrical Energy


Question:
The image formed on a cinema screen is an example of:

1.Real Image

2.Virtual Image

3.Point Image

4.Plane Image


Question:
What do you mean by Blood Moon?

1. It is total solar eclipse.

2. It is partial lunar eclipse with red glow

3.It is total lunar eclipse with deep red glow

4.None of the above


Question:
What do you understand by an eclipse?

1. Partial or total blocking of light of one celestial object by another.

2.Partial or total blocking of light by Moon.

3.Partial or total blocking of light by Earth.

4.Partial or total blocking of light by Sun.


Question:
What is Solar Eclipse?

1.When moon comes in between Earth and Sun

2. When Earth comes in between Moon and Sun

3.When Sun comes in between Earth and Moon

4. When Sun rays does not reach Earth.


Question:
What is the colour of insulation covering on live wire?

1.Green

2.Red

3.Black

4.Yellow


Question:
What is the colour of insulation covering on neutral wire?

1. Blue

2.Red

3.Green

4.Black


Question:
What is the electric potential of neutral wire?

1.Zero volt

2. 100 volt

3.10 volt

4.10 volt


Question:
What is the fuse of lighting circuit?

1. 20 A fuse

2.5 A fuse

3.18 A fuse

4.5 A fuse


Question:
What is the fuse of power circuit?

1. 5 A fuse

2.18 A fuse

3.15 A fuse

4.10 A fuse


Question:
What is the rating of main fuse which is put in the live wire?

1.10 amperes

2.140 amperes

3.50 amperes

4.65 amperes


Question:
When an object falls freely towards the ground, then its total energy:

1.Increases

2.Decreases

3.Remains constant

4.First increases then decreases


Question:
When did Lunar Eclipse happen?

1.Half Moon

2.Full Moon

3.Equinox

4.None of the above


Question:
When Lunar Eclipse occur?

1.When Sun is between Earth and Moon

2.When Earth is between Sun and Moon

3. When Moon is between Earth and Sun

4.When Earth is between Sun and other celestial bodies


Question:
When the same pattern of solar eclipse repeats every 18 years 11 days 8 hours are known as:

1. Nodes cycle

2.Saros cycle

3.Saras cycle

4.Payan cycle


Question:
Which object does not reflect more light?

1.Polished Surface

2. Shining Surface

3.Unpolished

4.Both A and B


Question:
Which of the following devices is run by lighting circuit in the house?

1. Electric bulb

2. Tube-lights

3.Fans

4. All of the above


Question:
Why light is said to have a dual nature?

1.It exhibits the properties of wave and particles.

2.It exhibits the properties of reflection and diffraction.

3.It has both interference and polarisation effect.

4.None of the above


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