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UPSC NDA and NA Physics Quiz 4

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UPSC NDA and NA Physics Quiz 4

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Physics is a very important subject for Railway Recruitment exams and UPSC Exams. UPSC NDA and NA Prelims Exam is the combination of Mathematics and General Ability. Physics is one of the most important topics in the General Ability section. All these questions are easily understandable format. UPSC NDA and NA Physics Quiz 4 is very useful to get the maximum marks from the General Ability sections. Candidates can check the daily updates at UPSC Official Website

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Paper Mode Subject Marks Duration
Paper-I Mathematics 200 Marks 2 hours
Paper-II General Ability 200 Marks 2 hours
UPSC NDA and NA Syllabus

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1. What is the relationship between the rate of emission of photo electrons and intensity of incident light in photoelectric effect?
    A. Directly proportional B. Inversely proportional C. Rate of emission is inversely proportional to the square of intensity of incident light D. Rate of emission is directly proportional to the square of the intensity of incident light

Answer: Option A
2. Which of the following is not true about electromagnetic waves?
    A. These waves are produced by accelerating charged particles B. Electric and magnetic fields in electromagnetic waves are perpendicular to each other C. The change in electric and magnetic field is not sinusoidal but random D. These waves do not require any medium to propagate

Answer: Option C
3. A solid can undergo three types of expansions. Which of the following is not one of them?
    A. Linear expansion B. Superficial expansion C. Cubical expansion D. Spherical expansion

Answer: Option D
4. Relative humidity __________ with increase of temperature
    A. Increases B. Decreases C. Remains same D. Might increase or decrease

Answer: Option A
5. The instrument used for measuring relative humidity is?
    A. Hygrometer B. Barometer C. Seismoscope D. Anemometers

Answer: Option A
6. What is the SI unit of potential difference?
    A. Volt B. Ampere C. Henry D. Ohm

Answer: Option A
7. What is the unit of electric charge?
    A. Ampere B. Coloumb C. Farad D. Henry

Answer: Option B
8. Which of the following is a conductor?
    A. Plastic B. porcelein C. Copper D. Wood

Answer: Option C
9. How is an ammeter connected in a circuit?
    A. Parallel B. Series C. Can be connected either in parallel or in series D. None of the above

Answer: Option B
10. The current flowing in a wire is in the ________ direction as that of the electrons flowing in the wire.
    A. Opposite B. Same C. Either same or opposite D. Cannot be determined

Answer: Option A
11. R is the radius of curvature and f is the focal length of a spherical mirror. What is the relationship between the two?
    A. R=2f B. R= [latex]\frac{f}{2}[/latex] C. R = [latex]{f}^{2}[/latex] D. [latex]\frac{f}{4}[/latex]

Answer: Option A
12. Which of the following is true regarding the formation of image in a concave mirror when the object is at infinity?
    A. Diminished, virtual and inverted B. Enlarged, real and inverted C. Highly diminished, point sized, real and inverted D. Enlarged, virtual and erect

Answer: Option C
13. Which of the following is true regarding the formation of image in a convex mirror when the object is at infinity?
    A. Highly diminished, point sized, virtual and erect B. Diminished, virtual and erect C. Enlarged, virtual ad erect D. Diminished, virtual and inverted

Answer: Option A
14. The net power of lenses placed in contact with each other is given by
    A. The average of power of all the lenses B. The sum of the powers of all the lenses C. The product of the powers of all the lenses D. The sum of the reciprocal of the powers of all the lenses

Answer: Option B
15. Which of the following is a vector quantity?
    A. Distance B. Displacement C. Speed D. Kinetic energy

Answer: Option B

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