Physics MCQs For UPSC(NDA/NA) Exam
UPSC NDA/NA PHYSICS MCQ Q.1
Which one of the following is correct?
Lightning is formed, when
(a) similar charges of electricity rush towards each other and then get repelled
(b) cloud strike against impurities in air and the friction burns up these impurities
(c) strong opposite charges in different clouds break down the resistance offered by intervening air
(d) water vapour produces electricity in the cloud
Ans.(a)
UPSC NDA/NA PHYSICS MCQ Q.2
When light waves travel from air to glass, which variables are affected?
(a) wavelength, frequency and velocity
(b) velocity and frequency only
(c) wavelength and frequency only
(d) wavelength and velocity only
Ans.(d)
UPSC NDA/NA PHYSICS MCQ Q.3
Which one of the following is correct?
Electrical lines of forces
(a) exist everywhere
(b) exist in the immediate vicinity of positive charge
(c) exist in the immediate vicinity of negative charge
(d) are imaginary
Ans.(d
UPSC NDA/NA PHYSICS MCQ Q.4
Two similar poles repel each other with a force of 0.005 N when placed 16 cm apart. If they are placed 8 cm apart, what will be the repulsing force?
(a) 0.001 N
(b) 0.002 N
(c) 0.01 N
(d) 0.02 N
Ans.(d)
UPSC NDA/NA PHYSICS MCQ Q.5
Which one of the following properties distinguishes ultrasound from normal audible sound?
(a) intensity
(b) speed of propagation
(c) frequency
(d) quality
Ans.(c)
UPSC NDA/NA PHYSICS MCQ Q.6
Which one of the following is correct?
Large aperture telescopes are used for
(a) greater resolution
(b) greater magnification
(c) reducing lens aberration
(d) ease of manufacture
Ans.(a)
UPSC NDA/NA PHYSICS MCQ Q.7
Which one of the following is correct?
The wavelength of X-ray
(a) is longer than the wavelength of sound waves
(b) is longer than the wavelength of the yellow sodium light
(c) is longer than the wavelength of radio waves
(d) is of the order of 0.1 nanometer
Ans.(d)
UPSC NDA/NA PHYSICS MCQ Q.8
A bus moving at a speed of 24 m/s begins to slow at a rate of 3 m/s each second. How far does it go before stopping?
(a) 96 m
(b) 72 m
(c) 60 m
(d) 48 m
Ans.(a)
UPSC NDA/NA PHYSICS MCQ Q.9
The time period of a simple pendulum oscillating in a laboratory at north pole is 4 s. Accounting for earth's rotation only, what will be the time period of this pendulum oscillating in a laboratory at equator?
(a) less than 4 s
(b) more than 4 s
(c) equal to 4 s
(d) infinity
Ans.(b)
UPSC NDA/NA PHYSICS MCQ Q.10
A bullet travelling horizontally hits a block kept at rest on a horizontal surface and gets embedded into it, the two together then move with a uniform velocity. Which one of the following conservation laws holds?
(a) Conservation of angular momentum
(b) Conservation of kinetic energy
(c) Conservation of linear momentum
(d) Conservation of velocity
Ans.(c)
🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆
🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆🟆
Comments
Post a Comment