NEET Physics Previous Year Questions (PYQ-Style) — With Solutions

A body is thrown vertically upward with an initial velocity of 20 m/s. Taking g = 10 m/s², the maximum height it reaches is:

• A.10 m
• B.15 m
• C.20 m
• D.40 m

A projectile is launched at 45° to the horizontal with a speed of 20 m/s. Taking g = 10 m/s², its horizontal range is:

• A.10 m
• B.20 m
• C.40 m
• D.80 m

A block of mass 2 kg rests on a horizontal surface with coefficient of friction 0.4. The minimum horizontal force needed to just start moving it is (g = 10 m/s²):

• A.0.8 N
• B.4 N
• C.8 N
• D.20 N

A body of mass 2 kg moving at 5 m/s is brought to rest. The work done by the stopping force is:

• A.−12.5 J
• B.−25 J
• C.−50 J
• D.+25 J

A car of mass 1000 kg negotiates a circular turn of radius 50 m at a constant speed of 10 m/s. The centripetal force required is:

• A.200 N
• B.1000 N
• C.2000 N
• D.4000 N

The escape velocity from Earth's surface is 11.2 km/s. For a planet of the same mean density but twice the radius of Earth, the escape velocity is:

• A.5.6 km/s
• B.11.2 km/s
• C.22.4 km/s
• D.44.8 km/s

The moment of inertia of a solid sphere of mass M and radius R about a diameter (axis through its centre) is:

• A.(2/5)MR²
• B.(2/3)MR²
• C.(1/2)MR²
• D.MR²

A particle executes simple harmonic motion with amplitude 5 cm and time period 2 s. Its maximum speed is:

• A.π cm/s
• B.2.5π cm/s
• C.5π cm/s
• D.10π cm/s

Two point charges of +2 μC and +8 μC are held a fixed distance apart. The ratio of the magnitude of the force on the 2 μC charge to that on the 8 μC charge is:

• A.1 : 1
• B.1 : 4
• C.4 : 1
• D.1 : 2

The electric field at a distance of 3 m from a point charge is 20 N/C. At a distance of 6 m from the same charge, the field is:

• A.5 N/C
• B.10 N/C
• C.40 N/C
• D.80 N/C

The work done in moving a charge of 2 C through a potential difference of 5 V is:

• A.2.5 J
• B.5 J
• C.7 J
• D.10 J

Two capacitors of 3 μF and 6 μF are connected in series. Their equivalent capacitance is:

• A.2 μF
• B.4.5 μF
• C.9 μF
• D.18 μF

An electric dipole of moment p is placed in a uniform electric field E, with its axis at an angle θ to the field. The torque acting on it is:

• A.pE cosθ
• B.pE sinθ
• C.pE tanθ
• D.pE

The critical angle for total internal reflection at a glass–air interface, where the glass has refractive index 1.5, is approximately:

• A.30°
• B.41.8°
• C.48.6°
• D.60°

An object is placed 20 cm in front of a convex lens of focal length 10 cm. The image is formed at a distance of:

• A.10 cm
• B.20 cm
• C.40 cm
• D.5 cm

A concave mirror of focal length 15 cm forms an image of an object placed 30 cm in front of it. The magnification of the image is:

• A.+1
• B.−1
• C.+2
• D.−2

In Young's double-slit experiment the fringe width is β. If the separation between the two slits is doubled while everything else is unchanged, the fringe width becomes:

• A.2β
• B.β/2
• C.β
• D.4β

The work function of a metal is 2 eV. Taking hc = 1240 eV·nm, its threshold wavelength for the photoelectric effect is:

• A.124 nm
• B.310 nm
• C.620 nm
• D.1240 nm

In the Bohr model of the hydrogen atom, the energy of the electron in the n = 2 state is:

• A.−13.6 eV
• B.−6.8 eV
• C.−3.4 eV
• D.−1.51 eV

A radioactive sample has a half-life of 4 years. The fraction of the sample remaining undecayed after 12 years is:

• A.1/2
• B.1/4
• C.1/8
• D.1/16

The de Broglie wavelength associated with a moving particle is inversely proportional to its:

• A.momentum
• B.energy
• C.frequency
• D.wavelength

In an isothermal process, 200 J of heat is supplied to an ideal gas. The change in its internal energy is:

• A.200 J
• B.0 J
• C.−200 J
• D.100 J

A Carnot engine operates between a source at 400 K and a sink at 300 K. Its maximum theoretical efficiency is:

• A.25%
• B.33%
• C.75%
• D.100%

According to the kinetic theory of gases, the root-mean-square speed of the molecules of an ideal gas is proportional to:

• A.T
• B.√T
• C.T²
• D.1/√T

For an ideal monatomic gas, the ratio of the specific heats γ = Cp/Cv is:

• A.1.33
• B.1.40
• C.1.67
• D.1.00