Q.1
Energy stored in the nucleus of an atom is called
Q.2
Heavy water is used in nuclear reactor to
Q.3
Radiocarbon is produced in the atmosphere as a result of
Q.4
The force between charged particles is called as:
Q.5
Moving electric charge produces :
Q.6
Tape recorder should not be kept near one of the following things :
Q.7
Low voltage cables are meant for use up to
Q.8
The method of magnetisation is:
Q.9
The paramagnetic theory of magnetism applies to
Q.10
Where should a boat compass be mounted?
Q.11
Which of the following group of elements are diamagnetic?
Q.12
Which of the following is not true about X-rays?
Q.13
A multimeter is used to measure
Q.14
In nuclear reactor, heavy water is used as
Q.15
What are the particles emitted by radioactive element after 3 consecutive disintegration?
Q.16
Nuclear sizes are expressed in a unit named
Q.17
Which one among the following is not an electromagnetic wave?
Q.18
Eddy current is generated by
Q.19
Which of the following circuit elements is used to ''block" DC in an electronic circuit ?
Q.20
Magnetic keepers are pieces of
Q.21
Curie point is the temperature at which
Q.22
Which of the following properties is found only in ferromagnetic materials ?
Q.23
At the Curie temperature, the ferromagnetic materials get converted into
Q.24
In the process of magnetisation of a bar
Q.25
X–rays are
Q.26
Which one type of radiation has the longest wave length
Q.27
Beta rays emitted by a radioactive material are
Q.28
A car parked in the sun with its windows closed gets terribly hot inside. This is due to
Q.29
What is the wavelength of visible spectrum ?
Q.30
Gamma rays can cause
Q.31
Electromagnetic waves are transverse in nature is evident by
Q.32
Which of the following parts of the sunlight makes the solar cooker hot ?
Q.33
A photostat machine works on
Q.34
On which of the following techniques photostate machine works ?
Q.35
Tesla is a unit of magnetic :
Q.36
Magnetic field lines about a current-carrying wire
Q.37
Magnetic domains normally occur in
Q.38
A small piece of a substance is weakly attracted by a strong magnetic field. The substance is
Q.39
X-rays region lies between
Q.40
In the absence of ozone layer, which rays will enter into atmosphere?
Q.41
Forged documents are detected by
Q.42
To measure the speed of an approaching car a police officer shines
Q.43
Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface ?
Q.44
Where are mesons found ?
Q.45
Green house effect is the heating up of the Earth's atmosphere which is due to
Q.46
Visible light has a higher frequency than
Q.47
Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by
Q.48
In the atmosphere ultraviolet rays are absorbed by
Q.49
In MRI machine, which one of the following is used?
Q.50
The radiation initially produced in fluorescent tube is
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