NEET MCQ for Physics 4
Q.1.An arc lamp requires a direct current of 10A at 80V to function. If it is connected to a 220V (mms), 50 Hz AC supply, the series inductor needed for it to work is close to
A) 0.065 H
B) 80 H
C) 0.08 H
D) 0.044 H
Q.2.Heat capacity of a body is Infinite. It implies that
A) Body absorbs heat
B)Body rejects heat
C) Temperature of the body remains constant on supplying heat to it
D) None of the above
Q.3.An open glass tube is immersed in mercury in such a way that a length of 8 cm extends above the mercury level. The open end of the tube is then closed and sealed and the tube is raised vertically up by additional 46 cm. What will be length of the air column above mercury in the tube now? (Atmospheric pressure = 76 cm of Hz)
A) 38 cm
B) 6 cm
C) 16 cm
D) 22 cm
Q.4.Which of the following terms is not used in the field of physics?
A) Latent heat
B) Nuclear fusion
C) Refractive index
D) Stock value
Q.5.Main reason of viscosity in liquids is
A) Adhesive force
B) Cohesive force
C) Gravitational force
Q.6.Which of the followings is not a fundamental physical quantity?
Q.7.The absorption of ink by blotting paper involves
A) Viscosity of ink
B) Capillary action phenomenon
C) Diffusion of ink through the blotting
D) Siphon action
Q.8.Sun accounts for approximately what fraction of total mass of Solar System?
Q.9.When light from some sources enters to the earth’s atmosphere, it gets scattered. Which among the following is a reason behind scattering?
A) Various wavelengths of light
B) Dust, smoke and gas molecules
C) Atmospheric pressure
D) None of the above
Q.10.Which among the following types of glasses contains Cerium and other rare earths and has a high absorption of ultraviolet rays?
A) Crookes Glass
B) Pyrex Class
C) Flint Glass
D) Crown Glass
Q.11.Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from
Q.12.It is easier to roll a stone up a sloping road than to lift it vertical upwards because
A) Work done in rolling is more than in lifting
B) Work done in lifting the stone is equal to rolling it
C) Work done in both is same but the rate of doing work is less in rolling
D) Work done in rolling a stone is less than in lifting it
Q.13.A tourist, who plans to visit a hill station located at very high altitude also wishes to take along his Television Set. In this context, consider the following:
Cathode Ray Tube TV
Which among the above are expected to work properly at very high altitudes?
A) Only 1
B) 1& 2
C) 1& 3
D) 2 & 3
Q.14.The power we use at Home has a frequency of 60Hz. What would be the period of the sine wave?
A) 0.116 Seconds
B) 0.0116 Seconds
C) 0.00116 Second
D) 0.0016 Microseconds
Q.15.Radiation hardening is used in design of artificial satellites, spacecraft, military aircraft, nuclear power stations, and nuclear weapons for which of the following purposes?
A) Protection from radiation damage
B) Trace element analysis
C) Use radiation energy
D) Increase resistance
Q.16.Which among the following is the SI physical unit of dynamic viscosity?
Q.17.Which of the following causes the drop of water to be in spherical shape?
B) Air resistance
C) Surface tension
Q.18.Which among the following is known for a FBTR (fast Breeder Test Reactor)?
D) None of the above
Q.19.In any collision, the parameter which is conserved is
A) Kinetic energy
B) Angular momentum
C) Linear momentum
D) Potential energy
Q.20.A solenoid is connected to a battery so that a steady current flows through it. If an iron core is inserted into the solenoid, the current will
C) Remain same
D) First increase then decrease
Q.21.The visible range of solar radiation is
A) 100 – 400 nm
B) 400 – 700 nm
C) 740 – 1000 nm
D) 1000 – 1300nm
Q.22.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’
Q.23.An oscillator is an amplifier with:
A) A large gain
B) Negative feedback
C) Positive feedback
D) No feedback
Q.24.If the conductivity of a semiconductor is only due to break of the covalent band due to the thermal excitation, then the semiconductor is called:
D) None of these
Q.25.A capacitor has some dielectric between its plates, and the capacitor is connected to a de source. The battery is now disconnected and then the dielectric is removed, then
A) Capacitance will increase.
B) Energy stored will decrease.
C) Electric field will increase.
D) Voltage will decrease.