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# SSC Scientific Assistant IMD Physics Questions 21 to 40 AMBIPi

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%

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/(2πεor2)

Option B : V = Q/(4πεor2)

Option C : V = Q/(4πεor)

Option D : V = Q/(2πεor)

Option C : V = Q/(2πεor2)

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

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?

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

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

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 20oC to 720 oC? [Specific Heat Capacity  of Aluminum is 900 J/(Kgk)]

Option A : 3.15 x 105

Option B : 3.15 x 107

Option C : 1.26 x 105

Option D : 1.26 x 107

Option A : 3.15 x 105

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 : n23 = n31 x n12

Option B : n32 = n31 x n12

Option C : n32 = n13 x n12

Option D : n23 = n13 x n12

Option A : n32 = n31 x n12

IMD Scientific Assistant Physics Questions Paper No: 29

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

Option B : Shivaliks

Option C : Himachal

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)

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= v2sinθ/g

Option C : t= v2sin2θ/g

Option D : t = vsin2θ/g

Option D :t = vsin2θ/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

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

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

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/k2 – 1/n2)(, 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

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

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 : πd2vt

Option B : πv2td

Option C : πt2vd

Option D : π2tvd

Option A : πd2vt

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

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 C : Boltzman constant

Option D : B- factor

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 : u2 = v2 + 2ax

Option B : x = (v2 – u2)/2a

Option C : v2 = (u2 – 2ax)

Option D : x = (v2 + u2 )/2a