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Physics - MOST IMPORTANT Executive Electrical Previous Year Questions

Practice real questions from previous year exams of Executive Electrical.

📘 Light and Optics📚 Magnification of Spherical Mirror

Q1

A negative sign in the value of the magnification indicates that the image is ________________.

🎯 DFCCIL Executive Electrical 2025

A.

enhanced in intensity

B.

diminished in intensity

C.

real

D.

virtual

📘 Work, Energy and Power📚 Work done under different cases

Q2

In which of the following cases is work being done?

🎯 DFCCIL Executive Electrical 2025

A.

No force is acting on a massive object.

B.

A force is applied on a massive object, and the object is displaced.

C.

A massive object is moving with uniform speed.

D.

A force is applied on a massive object, and the object does not move.

📘 Sound📚 Characteristics of Sound waves- wavelength, time period, etc.

Q3

The relation between the frequency (ν) and time period (T) is given by:

🎯 DFCCIL Executive Electrical 2025

A.

ν = 2/T

B.

ν = 1/T

C.

ν = T

D.

ν = 2 T

📘 Sound📚 Reflection and Refraction of Sound Waves

Q4

Why is the ceiling of a concert hall curved?

🎯 DFCCIL Executive Electrical 2025

A.

To ensure that sound reaches every corner of the hall

B.

To prevent sound from escaping the hall

C.

To make the sound loud enough

D.

To increase the speed of sound

📘 Fluid Mechanics📚 Pressure and its applications

Q5

Pressure is defined as:

🎯 DFCCIL Executive Electrical 2025

A.

Thrust + Area

B.

Area/Thrust

C.

Thrust/Area

D.

Thrust × Area

📘 Work, Energy and Power📚 Misc

Q6

India is ranked ______ in harnessing wind energy for the production of electricity.

🎯 DFCCIL Executive Electrical 2023

A.

third

B.

seventh

C.

fifth

D.

ninth

📘 Magnetism📚 Galvanometer

Q7

A ______ is an instrument that can detect the presence of a current in a circuit.

🎯 DFCCIL Executive Electrical 2023

A.

galvanometer

B.

voltmeter

C.

sphygmomanometer

D.

potentiometer

📘 Light and Optics📚 Images formed by Concave Mirror

Q8

What will be the position and nature of the image of an object positioned between C and F of a concave mirror?

🎯 DFCCIL Executive Electrical 2023

A.

Beyond C, real and inverted

B.

Beyond C, virtual and erect

C.

Between F and C, real and inverted

D.

Between F and C, virtual and erect

📘 Light and Optics📚 Refractive Index

Q9

Which among the following material medium has the highest absolute refractive index?

🎯 DFCCIL Executive Electrical 2023

A.

Carbon disulphide

B.

Crown glass

C.

Turpentine oil

D.

Fused quartz

📘 Current Electricity📚 Ohm's law

Q10

Which of the following equation is the correct representation of Ohm’s law? (Where V = potential difference, I = current and R = resistance.)

🎯 DFCCIL Executive Electrical 2023

A.

V = I/R

B.

V = R/I

C.

R = I/V

D.

I = V/R

📘 Light and Optics📚 Reflection of Light and Terminology involved

Q11

The ray that comes back from a surface after the reflection is known as ______.

🎯 DFCCIL Executive Electrical 2018

A.

A reflected ray

B.

An x-ray

C.

An incident ray

D.

An alpha ray

📘 Electrostatics📚 Methods of Charging- Friction, Conduction and Induction

Q12

When a glass rod is rubbed on silk, what is the charge traditionally called (on glass rod)?

🎯 DFCCIL Executive Electrical 2018

A.

Positive

B.

Negative

C.

Neutral

D.

Natural

📘 Atomic and Nuclear Physics📚 Atoms- Electrons, Protons, Neutrons

Q13

Who discovered the electrons?

🎯 DFCCIL Executive Electrical 2021

A.

E. Goldstein

B.

J. Chadwick

C.

J.J. Thomson

D.

Neils Bohr

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