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.

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PPSC Class Physics Chapter 7 Important MCQ's

Sr.#	Question	Answer
1	In the experiment of photo electric effect the minimum frequency of photons at which electrons are emitted from a metal surface is called.	A. Critical frequency B. Typical frequency C. Threshold frequency D. Surface frequency
2	The emission of photons by a metal when electrons are incident is called.	A. Photo electric effect B. Pair production C. X-rays production D. Gama ray production
3	Which of the following is formed by decay of a free neurton.	A. A number of electrons B. Two protons C. A proton and an electron D. An alpha particle
4	X-rays used for	A. Cutting boring and precision welding B. Retina stitching in eye operations C. Detecting heavy elements under the earth D. Deflecting flaws in welding and casting
5	The most familiar example of radioactive dating is.	A. Nitrogen dating B. Carbon dating C. Hydrogen dating D. Helium dating
6	An important property of an ideal power supply is.	A. Infinite internal resistance B. Zero internal resistance C. Large output resistance D. Small output resistance
7	In CC configuration voltage gain is.	A. Less than one B. More than one C. One D. Zero
8	Deuterium is	A. A transuranic element B. A type o cosmic particle C. An isotope of hydrogen D. An isotope of helium
9	As the mass number increases, the binding energy per nucleon in a nucleus	A. Increases B. Decreases C. Remain constant D. Varies in a way that depends upon A
10	The energy equivalent of 1 kg of matter a	A. 10^-15 J B. 1 J C. 10¹²J D. 10¹⁷ J

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PPSC Physics Topic 7 MCQ Test With Answer

MCQ's Test For PPSC Physics Topic 7 Modern Physics

PPSC Physics Topic 7 Modern Physics

The most familiar example of radioactive dating is.

The total energy of an electron in an orbit around the nucleus is.

The process by which nuclei emit a ,b and gama rays in order to attain stability is called.

What are isotopes.

Radioactive substances do not emit

The maximum K.E of photo electrons depends upon

White light a tungsten filament lamp is passed through sodium vapor and viewed through a diffraction gritting Which of the following best describes the spectrum which would be seen.

The charge on a helium nucleus is equal to the charge of.

As oscillator is basically an amplifier with loop gain

The radius of second orbit of hydrogen atom is

Which of the following are particle accelerators.

In a Geiger Marsden experiment why do the great majority of the Alpha particles pass straight through the metal foil.

Bohr's atomic model assumes

the wavelength of continuous X-rays is inversely proportional to.

The maximum energy of emitted photoelectron is measured by

The decimal equivalent of 1111 is

The electrons behave as wave because.

The Compton effect in X-rays proves that

The most readily fissionable isotope of uranium has atomic mass of

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.

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Set 17

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Set 21

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PPSC Class Physics Chapter 7 Important MCQ's

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