PPSC Physics Topic 7 MCQ Test With Answer

Prepare Modern Physics and all other important topics with PPSC Physics online test. Modern Physics is a term that is used to describe all the discoveries and observations that made physicists rethink their understanding of Physics in the 19th and 20th centuries. In this day and age, one can't study Physics without having a firm understanding of concepts of Modern Physics. That’s why seekers for PPSC Physics jobs need to understand the subject of Modern Physics. Examiners ask many questions from this topic in the PPSC Physics test.

To make the PPSC exam preparation easier for you, team IlmKiDunya.com has created the PPSC Physics online test portal. On this page, you can attempt the PPSC online test MCQs about Modern Physics. Many students complain that they don’t find information about the PPSC Physics exam preparation. We at IlmKiDunya.com bring PPSC online test to your fingertips so you can prepare quickly for the test.

MCQ's Test For PPSC Physics Topic 7 Modern Physics

Try The MCQ's Test For PPSC Physics Topic 7 Modern Physics

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PPSC Physics Topic 7 Modern Physics

00:00
Question # 1

Which of the following is not a mode of radioactive decay

Question # 2

The simple form of particle accelerator is.

Question # 3

In n-p-n transistor the current flows in the direction from

Question # 4

Induced fission result from the absorption of

Question # 5

Which Isotopes is use din radioactive dating.

Question # 6

X-rays used for

Question # 7

For the normal operation of transistor the emitter base junction is always.

Question # 8

The constant lamda is called the.

Question # 9

Choose the one which acts as single inverter.

Question # 10

In a cloud chamber the Alpha particles leave

Question # 11

The energy in an electromagnetic wave is carried in the units called.

Question # 12

The unit Planck's constant is equivalent to that of.

Question # 13

48 days after the receipt the amount of iodine -131 left behind is only.

Question # 14

The electron behave an waves because

Question # 15

When objects placed in a room are exposed to X- rays they appear

Question # 16

The binding energy to pull the deuterium H apart into a proton and a neutron is equal to.

Question # 17

If the base emitter junction is forward biased and base collector junction is reverse biased the BJT is in.

Question # 18

At room temperature the potential difference between the two sides of depletion region for silicon is of the order of.

Question # 19

The half life of isotopes X is four days and its initial mass is 32 mg What mass of the isotope X will remain after twelve days.

Question # 20

As the mass number varies, which of the quantities does not change w.r.t nucleus.

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PPSC Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 LASER is a device which can produce.
A. Monochromatic beam of light
B. Coherent beam of light
C. An intense beam of light
D. All of the above
2 In a nuclear reactor chani reaction is controlled by introducing.
A. Iron rods
B. Cadmium rods
C. Graphite rods
D. Platinum rods
3 Which of the following detectors can count fast and operate at low voltage.
A. G.M Counter
B. Cloud chamber
C. Solid state detector
D. Bubble chamber
4 Positron are produced during.
A. Annihilation
B. ionization
C. Pair production
D. x rays production
5 The energy of neutrons obtained during a fission reaction is.
A. 0.1 MeV
B. 1 KeV
C. 1 MeV
D. Zero
6 The half life of a radioactive substance is 6 years What is the time taken by 12 g of this substance to decay completely.
A. 12 years
B. 24 years
C. 48 years
D. infinity
7 The half life of isotopes X is four days and its initial mass is 32 mg What mass of the isotope X will remain after twelve days.
A. 2 mg
B. 4 mg
C. 8 mg
D. 18 mg
8 X-rays are absorbed maximum by
A. Paper
B. Copper
C. Steel
D. Lead
9 Binding energy per nucleon is.
A. Greatest for heavy nuclei
B. Least for heavy nuclei
C. Greatest for light nuclei
D. Greatest for medium weight nuclei
10 The usefulness of X rays is largely due to their
A. Mass
B. Density
C. Volume
D. Penetrating power

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