# NEET MCQ for Physics 3

NEET MCQ for Physics 3

Q.1.Astronomical unit (AU) is the average distance between
A) The earth and the moon
B) The earth and the sun
C) The moon and the sun
D) The earth and the mars

Q.2.Albert Einstein got Nobel Prize in Physics for his work on
A) Special theory of relativity
B) General theory of relativity
C) Photoelectric effect
D) Theory of specific heats

Q.3.Assume that a drop of liquid evaporates by decrease in its surface energy. So that its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible? The surface tension is T. density of liquid is p and L is its latent heat of vaporization
A) pL/T
B) √T/Lp
C) T/Lp
D) 2T/pL

Q.4.The supply voltage to a room is 120 V. The resistance of the lead wires is 69 A 60 W bulb is already switched on. What is the decrease of voltage across the bulb, when a 240 W heater is switched on in parallel to the bulb?
A) Zero Volt
B) 2.9 Volt
C) 13.3 Volt
D) 10.04 Volt

Q.5.In a young’s double slit experiment, slits are separated by 0.5 mm, and the screen is placed 150 cm away. A beam of light consisting of two wavelengths. 650 nm and 520 nm. is used to obtain interference fringes on the screen. The least distance from the common central maximum to the point where the bright fringes due to both the wavelengths coincide is:
A) 9.75 mm
B) 15.6 mm
C) 1.56 mm
D) 7.8 mm

Q.6.Which of the followings is not a derived physical quantity?
A) Speed
B) Volume
C) Force
D) Mass

Q.7.Arrange the following electromagnetic radiations per quantum in the order of increasing energy
A: Blue light B: Yellow light C:X-ray D: Radio wave
A) B, A, D, C
B) D, B, A, C
C) A, B, D, C
D) C, A, B, D

Q.8. 1 Fermi is equal to
A) 10^-15 mm
B) 10^-15 cm
C) 10^-14 m
D) 10^-15 m

Q.9.Work done by a force could be
A) Positive
B) Negative
C) Zero
D) All of these

Q.10.Crystals of which of the following naturally occurring substance exhibits both pyroelectric and piezoelectric properties making it versatile for application in the field of electronics?
A) Quartz
B) Mica
C) Topaz
D) Grapite

Q.11.Radiation hardening is used in design of artificial satellites, spacecraft, military aircraft, nuclear power stations, and nuclear weapons for which of the following purposes?
B) Trace element analysis
D) Increase resistance

Q.12.Newton-meters per second is represented as follows?
A) Ohm
B) Volt
C) Watt
D) Calorie

Q.13.VIBGYOR (Violet Indigo Blue Green Yellow Orange Red) are the rainbow colors in which of the following order?
A) Increasing wavelength
B) Decreasing wavelength
C) Increasing polarization
D) Increasing Speed

Q.14.Ultrasound which is upper limit of human hearing is characterized by which of the following frequencies?
A) Above 20 KHz
B) Above 200 KHz
C) Above 2 KHz
D) Below 20 KHz

Q.15.Which among the following property of the matter is studied in “Rheology”?
A) Gravitation
B) Viscosity
C) Magnetic Properties
D) Entropy

Q.16.Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
A) The heating effect of current alone
B) Hysteresis loss alone
C) Both the heating effect of current and hysteresis loss
D) Intense sunlight at noon

Q.17.Which among the following is NOT taken into account while choosing an orbit of the Satellite?
B) Gravitational force of the earth
C) Mass of the satellite
D) Distance from Earth

Q.18.Sound of frequency below 20 Hz is called
A) Audio sounds
B) Infrasonic
C) Ultrasonic
D) Supersonics

Q.19.Large astronomical telescopes always use as objective
A) Lens
B) Mirror
C) Combinations of lenses
D) None of the above

Q.20.Dams are made with thick walls at bottom because
A) Quantity of water increases with depth
B) Density of water increases with depth
C) Pressure of water increases with depth
D) Temperature of water increases with depth

Q.21.Which of the following is more viscous?
A) Hydrogen
B) Air
C) Water
D) Ammonia

Q.22.The power of a lens is measured in:
A) Diopters
B) Aeon
C) Lumen
D) Candela

Q.23.Which one among the following denotes the smallest temperature?
A) 1° on the Kelvin scale
B) 1° on the Reaumur scale
C) 1° on the Fahrenheit scale
D) 1° on the Celsius scale

Q.24.The dimensional formula for Planck’s constant and angular momentum are respectively
A) [ML2T-2] and [MLT-1]
B) [ML2T-1] and [ML2T-1]
C) [ML3T1] and [ML2T-2]
D) [MLT-1] and [MLT-2]

Q.25.The work done by any friction force is:
A) Always positive
B) Always negative
C) Always zero
D) Either positive or negative depending upon the situation

NEET MCQ Physics-1
NEET MCQ Physics-2
NEET MCQ Physics-3