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Question-1
Which part of a hot cathode ray tube give a fire beam of electrons to it?
(A)
Electron gem
(B)
Deflecting system
(C)
Fluorescent screen
(D)
All the above
Question-2
Atoms which have the same number of protons but different numbers of neutrons as that of the element are called its
(A)
Nuclides
(B)
Isobars
(C)
Isotopes
(D)
Positrons
Question-3
As compared to α particles, β particles have
(A)
Greater penetrating power
(B)
Lower penetrating power
(C)
Same penetrating power
(D)
Cannot predict
Question-4
Protons and neutrons together in the nucleus form
(A)
Positron
(B)
Electron
(C)
Nucleons
(D)
α particles
Question-5
Which radiations cause maximum ionization?
(A)
α radiations
(B)
β radiations
(C)
γ radiations
(D)
Infrared radiations
Question-6
Which part of a hot cathode ray tube converts electric signal to visual pattern?
(A)
Electron gem
(B)
Deflecting system
(C)
Fluorescent screen
(D)
All the above
Question-7
Which type of harmful radiations are emitted by nuclear wastes.
(A)
α radiations
(B)
β radiations
(C)
γ radiations
(D)
Beta and gamma radiations
Question-8
Which of the following is a method to find the age of an animal or plant fossil?
(A)
Isotopes
(B)
Isobars
(C)
Carbon dating
(D)
Radioactivity
Question-9
Radioisotope is used on the treatment of
(A)
Cancer
(B)
AIDS
(C)
Lever Xerosis
(D)
All the above
Question-10
Controlled exposure of which radiations is used on the treatment of cancer?
(A)
α radiations
(B)
β Radiations
(C)
γ Radiations
(D)
U – V radiations
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Cambridge Secondary Grade 9
IGCSE
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