Physics (light, electricity) MCQs for LDC
Practice 20 free Physics (light, electricity) questions under Basic Science — Science & Tech.
Strengthen your Physics (light, electricity) knowledge for LDC with curated MCQs. Switch between Hindi and English anytime.
LDC — Basic Science — Physics (light, electricity)
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
Why is tungsten commonly used as the filament material in electric bulbs?
Question 2 of 20
Which of the following branches of physics provides the fundamental principles required to understand 'work' and 'gravitation'?
Question 3 of 20
A thorough understanding of 'Physics in Everyday Life' helps administrators foster a specific type of society. What kind of society is this?
Question 4 of 20
In the context of the objective recruitment exams conducted by the RSSB (like Patwari and LDC), which of the following tasks are candidates most likely to face?
Question 5 of 20
Which of the following scenarios is a direct, observable example of the Tyndall Effect?
Question 6 of 20
Electric charge is inherently quantized, meaning it can only exist as integral multiples of a basic elementary charge (e). What is the absolute numerical value of this elementary charge carried by a single electron?
Question 7 of 20
Match List I (Real-life applications) with List II (Type of Mirror) and select the correct answer using the codes given below: List-I a. Shaving Mirrors b. Reflector in Solar Furnaces c. Rear-view mirrors in vehicles List-II 1. Convex Mirror 2. Concave Mirror 3. Plane Mirror
Question 8 of 20
Match List-I (Hindi Terminology) with List-II (English Terminology): List-I A. Yantriki B. Ushmagatiki C. Prakashiki D. Chumbakatva List-II 1. Optics 2. Magnetism 3. Mechanics 4. Thermodynamics Choose the correct code:
Question 9 of 20
An electric fuse is a critical safety device in any electrical circuit. Which specific combination of physical properties is essential for a fuse wire to function correctly during a current overload?
Question 10 of 20
Which specific electronic device is fundamentally required to convert the Direct Current (DC) stored in household batteries into Alternating Current (AC) for operating standard home appliances?
Question 11 of 20
What type of electromagnetic waves are primarily utilized to generate clear visualizations of the skeletal system?
Question 12 of 20
Assertion (A): Achieving high marks in descriptive science exams requires writing long, narrative paragraphs focusing heavily on the historical context of scientific discoveries. Reason (R): Evaluators expect precise scientific terminology, bullet points, and neat diagrams to demonstrate subject mastery.
Question 13 of 20
Which specific physical interaction is the core subject of the branch 'Chumbakatva'?
Question 14 of 20
Which specific property of a material refers to its resistance to demagnetization once it has been magnetized?
Question 15 of 20
Which of the following physical principles accurately justifies why Optical Fibers are chosen as the primary backbone for modern telecommunication networking over traditional copper cables?
Question 16 of 20
Which of the following scenarios best demonstrates the practical utility of a convex mirror's diverging properties?
Question 17 of 20
Which set of materials accurately represents examples of highly effective electrical insulators?
Question 18 of 20
An optometrist prescribes a corrective lens with a power of -4.0 D. Identify the nature and focal length of this lens.
Question 19 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 20 of 20