Hi students, Welcome to **Amans Maths Blogs (AMBIPi)**. Are you preparing for **SSC Scientific Assistant** and looking for * SSC Scientific Assistant IMD Physics Questions 21 to 40 with Answer Keys AMBIPi*? In this article, you will get previous year questions of SSC Scientific Assistant IMD (Indian Meteorological Department), which helps you in the preparation of government job of SSC IMD Scientific assistant.

## SSC Scientific Assistant IMD Previous Year Questions

**SSC Scientific Assistant Physics Question No: 21**

By what percent should the pressure of gas should increased so as to decrease its volume by 20%, at constant temperature?

**Option A** : 20%

**Option B** : 60%

**Option C** : 25%

**Option D** : 40%

**Show/Hide Answer Key**

**Option C : 25%**

**SSC Scientific Assistant Physics Question No: 22**

Electric potential at a point with a position vector r due to a point charge Q placed at the origin is given by the formula ________.

**Option A** : V = Q/(2πε_{o}r^{2})

**Option B** : V = Q/(4πε_{o}r^{2})

**Option C** : V = Q/(4πε_{o}r)

**Option D** : V = Q/(2πε_{o}r)

**Show/Hide Answer Key**

**Option C : V = Q/(2πε _{o}r^{2})**

**SSC Scientific Assistant Previous Year Physics Questions No: 23**

Fermi is a unit of ?

**Option A** : Length

**Option B** : Mass

**Option C** : Area

**Option D** : Time

**Show/Hide Answer Key**

**Option A : Length**

**SSC Scientific Assistant IMD Physics Questions No: 24**

Find the uniform angular acceleration of a wheel if its angular speed increases from 420 rpm to 660 rpm is 8 seconds?

**Option A** : 2π rad/s^{2}

**Option B** : 1 rad/s^{2}

**Option C** : π rad/s^{2}

**Option D** : 2 rad/s^{2}

**Show/Hide Answer Key**

**Option C : π rad/s ^{2}**

**SSC Scientific Assistant Physics Questions Paper No: 25**

For a transistor in common emitter configuration ______ is ratio of change in base- emitter voltage (ΔVBE) to the resulting change in base current (ΔIB) at constant collector-emitter voltage (VCE).

**Option A** : Output resistance

**Option B** : Current amplification factor

**Option C** : Voltage gain

**Option D** : Input resistance

**Show/Hide Answer Key**

**Option D : Input resistance**

**SSC Scientific Assistant Previous Year Paper Physics Questions No: 26**

For small deformations, stress and strain are proportional to each other. What is this known as ?

**Option A** : Hooke’s Law

**Option B** : Gauss’a Law

**Option C** : Henry’s Law

**Option D** : Joule’s Law

**Show/Hide Answer Key**

**Option A : Hooke’s Law**

**SSC Scientific Assistant Previous Year Paper Physics Questions No: 27**

How much heat (in joules) would be required to raise the temperature of 500 g of an aluminum sphere from 20^{o}C to 720 ^{o}C? [Specific Heat Capacity of Aluminum is 900 J/(Kgk)]

**Option A** : 3.15 x 10^{5}

**Option B** : 3.15 x 10^{7}

**Option C** : 1.26 x 10^{5}

**Option D** : 1.26 x 10^{7}

**Show/Hide Answer Key**

**Option A : 3.15 x 10 ^{5}**

**Scientific Assistant Previous Year Physics Questions Paper No: 28**

If 1, 2 and 3 represent different mediums and ‘n’ is refractive index, than which of the following equation is true.

**Option A** : n_{23} = n_{31} x n_{12}

**Option B** : n_{32} = n_{31} x n_{12}

**Option C** : n_{32} = n_{13} x n_{12}

**Option D** : n_{23} = n_{13} x n_{12}

**Show/Hide Answer Key**

**Option A : n _{32} = n_{31 }x n_{12}**

**IMD Scientific Assistant Physics Questions Paper No: 29**

What is the name of the outermost range of the Himalayas?

**Option A** : Himadri

**Option B** : Shivaliks

**Option C** : Himachal

**Option D** : Sahyadri

**Show/Hide Answer Key**

**Option B : Shivaliks**

**Previous Year SSC Scientific Assistant Physics Questions: 30**

If ‘A’ is the angle of prism, ‘I’ is the angle of incidence, ‘e’ is an angle of emergence, than the angle of deviation ‘α’ of the light incidence of prism is equal to

**Option A** : RA/I

**Option B** : RI/A

**Option C** : IA/R

**Option D** : A/(IR)

**Show/Hide Answer Key**

**Option A : RA/I**

**SSC IMD Scientific Assistant Physics Questions No: 31**

If a projectile is thrown with velocity v and makes an angle θ with the x-axis than the time taken for achieving maximum height is given by which formula?

**Option A** : t= vsinθ/g

**Option B** : t= v^{2}sinθ/g

**Option C** : t= v^{2}sin^{2}θ/g

**Option D** : t = vsin^{2}θ/g

**Show/Hide Answer Key**

**Option D :t = vsin ^{2}θ/g**

**SSC IMD Scientific Assistant Physics Questions No: 32**

If an object is placed with a 10 cm in front of convex lens of a focal length 6 cm, than find the position of the image (in cm) ?

**Option A** : 12

**Option B** : -15

**Option C** : 15

**Option D** : -12

**Show/Hide Answer Key**

**Option B : 15**

**SSC Scientific Assistant IMD Previous Year Physics Questions No: 33**

If chlorine has two isotopes one of 25u and the other 37 u and the average mass of chlorine atom is 35.5 u then the ratio of abundance of the two isotopes of masses 35 u and 37 u ______

**Option A** : 1/3

**Option B** : 1/4

**Option C** : 3/1

**Option D** : 4/1

**Show/Hide Answer Key**

**Option C : 3/1**

**SSC Scientific Assistant IMD Physics Questions No: 34**

If ‘E’ is a magnitude of uniform electric field in a conductor , ‘r’ is the relaxation time, (‘e’ is charge and ‘m’ is mass of electron), then the term -eEτ/m is equal to the ______ of the electrons.

**Option A** : force experienced by

**Option B** : acceleration experienced by

**Option C** : drift velocity of

**Option D** : charge density due to

**Show/Hide Answer Key**

**Option C : drift velocity of **

**SSC IMD Scientific Assistant Physics Questions Paper No: 35**

If the empirical formula for the observed wavelengths for hydrogen is 1/Α = R (1/k^{2} – 1/n^{2})(, where n is integral values higher than 1, then it represents the ______ spectral series.

**Option A** : Balmer

**Option B** : Paschen

**Option C** : Lyman

**Option D** : Brackett

**Show/Hide Answer Key**

**Option C : Lyman **

**SSC IMD Scientific Assistant Previous Year Paper Physics Questions No: 36**

If the energy of electron in the 2nd orbit of hydrogen is -3.4 eV, then how much is the energy (in eV) in the 3rd orbit ?

**Option A** : -1.511

**Option B** : –2.22

**Option C** : -5.1

**Option D** : -13.6

**Show/Hide Answer Key**

**Option A : -1.511**

**SSC IMD Scientific Assistant Previous Year Paper Physics Questions No: 37**

If the gas particles are of diameter ‘d’, average speed ‘v’, number of particles per unit volume ‘n’ then the volume of particle sweeps in time ‘t’ is?

**Option A** : πd^{2}vt

**Option B** : πv^{2}td

**Option C** : πt^{2}vd

**Option D** : π^{2}tvd

**Show/Hide Answer Key**

**Option A : πd ^{2}vt**

**IMD Scientific Assistant Previous Year Physics Questions Paper No: 38**

United States Food and Drug Administration (FDA) has approved which test for detecting Zika virus in donated blood??

**Option A** : Roche test

**Option B** : Cobas test

**Option C** : Trioplex test

**Option D** : Elisa test

**Show/Hide Answer Key**

**Option B : Cobas test**

**IMD Scientific Assistant Physics Questions Paper No: 39**

If the ideal gas equation is written as PV= kBNT, where N is the number of molecules, than kB represents?

**Option A** : Gas Constant

**Option B** : Bohr radius

**Option C** : Boltzman constant

**Option D** : B- factor

**Show/Hide Answer Key**

**Option C : Boltzman constant**

**Previous Year SSC IMD Scientific Assistant Physics Questions : 40**

If x is displacement, time taken is t, initial velocity is u , final velocity is v , and acceleration is a , than which of the following equations is true ?

**Option A** : u^{2} = v^{2} + 2ax

**Option B** : x = (v^{2} – u^{2})/2a

**Option C** : v^{2} = (u^{2} – 2ax)

**Option D** : x = (v^{2} + u^{2} )/2a

**Show/Hide Answer Key**

**Option D : x = (v ^{2} – u^{2})/ 2a**

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