NEET MCQ for Physics 7
Q.1.SI unit of the power of a lens is
B) Horse power
Q.2.The unit of electric dipole moment is
Q.3.If number of turns in primary and secondary coils is increased to two times each, the mutual inductance
A) Becomes 4 times
B) Becomes 2 times
C) Becomes A times
D) Remains unchanged
Q.4.If a variable frequency ac source is connected to a capacitor then with decrease in frequency the displacement current will
C) Remains constant
D) First decrease then increase
Q.5.Sound above what level (in decible) is considered hazardous noise pollution?
A) 30 db
B) 50 db
C) 80 db
D) 90 db
Q.6.For a total internal reflection, which of the following is correct?
A) Light travels from rarer to denser medium.
B) Light travels from denser to rarer medium.
C) Light travels in air only.
D) Light travels in water only.
Q.7.Light year is the unit of
D) None of these
Q.8.During the propagation of electromagnetic waves in a medium
A) Electric energy density is equal to the magnetic energy density.
B) Both electric and magnetic energy densities are zero.
C) Electric energy density is double of the magnetic energy density.
D) Electric energy density is half of the magnetic energy density.
Q.9.Two charges, each equal to q, are kept at x=-a and x = a on the x-axis. A particle of mass m and charge q0 = -q/2 is placed at the origin. If charge q0 is given a small displacement (y <<a) along the y-axis, the net force acting on the particle is proportional to
Q.10.The pressure that has to be applied to the ends of a steel wire of length 10 cm to keep its length constant when its temperature is raised by 1000C is: (For steel Young’s modulus is 2×1011 Nm-2 and coefficient of thermal expansion is 1.1×10-5 K-1)
A) 2.2 107 Pa
B) 2.2 x 106Pa
C) 2.2 x 108 Pa
D) 2.2 109 Pa
Q.11.What will be the gravitational field intensity on the earth’s surface?
Q.12.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.13.An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency 10 GHz. What is the frequency of the microwave measured by the observer? (Speed of light = 3 x 108 ms-1)
A) 17.3 GHz
B) 15.3 GHz
C) 10.1 GHz
D) 12.1 GHz
Q.14.For a planet revolving in an elliptical orbit, which of the following quantity remain constant?
A) Kinetic energy
B) Potential energy
C) Linear momentum
D) Angular momentum
Q.15.If the earth suddenly stops rotating about its own axis then the value of g would
A) Increases at poles
B) Decreases at poles
C) Increases on equator
D) Decreases on equator
Q.16.Working principle of an aeroplane is based on
A) Archimedes law
B) Pascal’s law
C) Bernoulli’s theorem
D) Stoke’s law
Q.17.Bernoulli’s theorem is based on the law of conservation of
C) Linear Momentum
D) Angular Momentum
Q.18.Consider the following:
Pressurized heavy water reactor (PHWR)
Fast breeder reactor (FBR)
Advanced Heavy Water Reactor (AHWR)
The above three represent the stages of India’s three stage Nuclear Power programme as follows respectively?
A) Stage I, Stage II, Stage III
B) Stage II, Stage I, Stage III
C) Stage III, Stage II, Stage I
D) Stage II, Stage III, Stage I
Q.19.First steam-powered vehicle was built by?
A) Richard Trevithick
B) Nicolas-Joseph Cugnot
C) Don Walsh
D) Janice Meek
Q.20.Light year is a unit of
D) Intensity of light
Q.21.Let a thin capillary tube be replaced with another tube of insufficient length then, we find water
A) Will overflow
B) Will not rise
D) Change its meniscus
Q.22.On which of the following the jet Engine works?
A) Conservation of energy
B) Conservation of Linear Momentum
C) Conservation of Mass
D) Conservation of Angular momentum
Q.23.Phobos and Deimos are the natural satellites of which of the following planets?
Q.24.Which among the following component of a fluorescent lamp contributes maximum in making them costly?
A) Mercury vapor
B) Light-emitting phosphors
Q.25.Which among the following would be most commonly affected, if the filament of an electric Bulb is not uniform?
D) None of the above