[MCQ]Physics MCQs For UPSC(NDA/NA) Exam, SET 5||DEB STUDY

PHYSICS OBJECTIVE Q&A FOR UPSC (NDA/NA) Exam

---------------------------------------------------------------------------------------------------------
FOR PREVIOUS SET, CLICK HERE
---------------------------------------------------------------------------------------------------------

UPSC NDA/NA PHYSICS MCQ Q.1

Two copper wires A and B of lenght L and 2 L respectively, have the same area of cross-section.  The ratio of the resistivities of wires A to the B is




(A) 4
(B) 2
(C) 1
(D) 1/2


Ans.(B)

UPSC NDA/NA PHYSICS MCQ Q.2

Which one among the following waves are called waves of heat energy?

(A) radio waves
(B) infrared waves
(C) ultraviolet waves
(D) microwaves


Ans.( B)

UPSC NDA/NA PHYSICS MCQ Q.3

What is the power of the lens,if the far  point of a short-sighted eye is 200 cm?

(A) - 0.5 D
(B) 2 D
(C) 1 D
(D) -1.5 D


Ans.(A)

UPSC NDA/NA PHYSICS MCQ Q.4

Which one among the following is correct for resultant of balanced forces?

(A) it is zero
(B) it is non- zero
(C) it varies continuously
(D) none of these


Ans.(A)

UPSC NDA/NA PHYSICS MCQ Q.5

Three resistance coils of resistivities 1 ohm , 2 ohm and 3 ohm are connected in series. If the combination is connected to a battery of 9 V , what is the potential drop across the resistance coil of 3 ohm?

(A) 2.0 V
(B) 3.0 V
(C) 4.5 V
(D) 6.0 V


Ans.(C)

UPSC NDA/NA PHYSICS MCQ Q.6

An electric lamp of 100 W is used for 10 h per day. The units of energy consumed  is one day by the lamp is

(A) 1 unit
(B) 0.1 unit
(C) 10 units
(D) 100 units


Ans.(A)

UPSC NDA/NA PHYSICS MCQ Q.7

Potential at a point due to a point charge is V. The charge is doubled and also the distance of the point from the charge is doubled. The new potential is

(A) V/2
(B) 4 V
(C) V
(D) 2 V


Ans.(C)

UPSC NDA/NA PHYSICS MCQ Q.8

Which one among the following is used to make periscopes?

(A) concave lens
(B) concave mirror
(C) plane mirror
(D) none of these


Ans.(C)

UPSC NDA/NA PHYSICS MCQ Q.9

Kilowatt - hour is the unit of

(A) potential difference
(B) electric power
(C) electric energy
(D) electric potential


Ans.(C)

UPSC NDA/NA PHYSICS MCQ Q.10

A body initially at rest is acted upon by a constant force. The rate of change of its kinetic energy varies

(A) linearly with square root of time
(B) linearly with time
(C) linearly with square of time
(D) inversely with time


Ans.(D)


---------------------------------------------------------------------------------------------------------
FOR NEXT SET CLICK HERE👈
---------------------------------------------------------------------------------------------------------