Physics (light, electricity) MCQs for CET Graduate
Practice 20 free physics (light, electricity) multiple choice questions for CET Graduate exam. Instant answers, explanations in Hindi and English, and topic-wise targeted practice.
Master Physics (light, electricity) under Basic Science for CET Graduate with our curated MCQ set. Every question is sourced from real Rajasthan exam patterns and updated regularly. Switch between Hindi and English anytime. Use this daily to strengthen weak areas before the exam.
CET Graduate — Basic Science — Physics (light, electricity)
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
In the context of competitive examinations for civil services, what is the primary purpose of evaluating candidates on scientific subjects?
Question 2 of 20
In a fluorescent tubelight, what is the specific role of the phosphor coating applied to the inside of the glass tube?
Question 3 of 20
In a household electrical wiring system, appliances are invariably connected in a parallel configuration rather than a series configuration. What is the primary physical reason for this arrangement?
Question 4 of 20
What is the primary focus of the branch of physics known as Magnetism (Chumbakatva)?
Question 5 of 20
If you remove the inner phosphor coating from a functioning fluorescent tubelight, what type of radiation would primarily escape into the room?
Question 6 of 20
A typical match-the-following question in RAS Preliminary examinations frequently evaluates a candidate's understanding of energy conversions. Which of the following devices is classically compared to demonstrate inverse energy conversion principles?
Question 7 of 20
A student sets up two distinct electrical circuits. Circuit X consists of three resistors connected end-to-end, whereas Circuit Y connects the same three resistors across common terminal points. Which of the following physical phenomena correctly distinguishes Circuit X from Circuit Y?
Question 8 of 20
A standard compound microscope utilizes two convex lenses known as the objective and the eyepiece. What is the specific functional purpose of the objective lens in this optical assembly?
Question 9 of 20
A uniform metal conductor wire has a starting baseline electrical resistance of R = 5 Ω. If this wire is carefully drawn out and stretched until its final length becomes exactly four times (4L) its original value, what will be its final electrical resistance, assuming temperature and material resistivity remain constant?
Question 10 of 20
Which of the following physiological changes is the primary underlying cause of Presbyopia in the human eye?
Question 11 of 20
The magnificent formation of a natural rainbow in the sky involves a complex combination of which sequence of primary optical phenomena inside individual suspended raindrops?
Question 12 of 20
Identify the incorrect statement regarding the classification of materials based on their electrical resistivity.
Question 13 of 20
The Cartesian sign convention relies heavily on the direction of incident light. In a standard setup where light travels from left to right, the focal length of a concave mirror will be:
Question 14 of 20
In the study of optics, magnification provides crucial geometric details. If m = hi / ho, and both hi and ho represent distances measured perpendicular to the principal axis, what makes the magnification positive?
Question 15 of 20
The magnificent blue coloration of a clear daytime sky is a direct visual consequence of incoming sunlight interacting with the Earth's upper atmosphere. Which specific atmospheric components are primarily responsible for scattering this short-wavelength light?
Question 16 of 20
During the intense summer heat in Rajasthan's Thar desert, travelers often witness illusions of water bodies on the hot sand. This specific optical illusion, known as a mirage, is fundamentally a consequence of:
Question 17 of 20
To concentrate immense solar energy efficiently, which of the following optical devices is used as a reflector in solar furnaces?
Question 18 of 20
A comprehensive analysis of Paramagnetic, Diamagnetic, and Ferromagnetic materials based strictly on their magnetic susceptibility involves defining complex physical behaviors. In the RAS Mains examination, such a topic is typically formulated as a:
Question 19 of 20
Which specific element of physics connects 'magnetic fields' with 'electrical currents'?
Question 20 of 20