JEE Main 2023 - Physics Section A Quiz

If the distance of the earth from sun is 1.5 × 10⁶ km. Then the distance of an imaginary planet from Sun, if its period of revolution is 2.83 years is :

Let y₁ be the ratio of molar specific heat at constant pressure and molar specific heat at constant volume of a monoatomic gas and y₂ be the similar ratio of diatomic gas. Considering the diatomic gas molecule as a rigid rotator, the ratio, y₁/y₂ is:

Given below are two statements: one is labelled as Assertion A and other is labelled as Reason R Assertion A: Steel is used in the construction of buildings and bridges. Reason R: Steel is more elastic and its elastic limit is high.

When a beam of white light is allowed to pass through convex lens parallel to principal axis, the different colours of light converge at different point on the principle axis after refraction. This is called:

In an Isothermal change, the change in pressure and volume of a gas can be represented for three different temperature : T₃ > T₂ > T₁ as:

An metallic rod of length 'L' is rotated with an angular speed of 'ω' normal to a uniform magnetic field 'B' about an axis passing through one end of rod as shown in figure. The induced emf will be:

If two vectors P = i + 2mj + mk and Q = 4î - 2j + mk are perpendicular to each other. Then, the value of m will be:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: A pendulum clock when taken to Mount Everest becomes fast. Reason R: The value of g (acceleration due to gravity) is less at Mount Everest than its value on the surface of earth.

An a-particle, a proton and an electron have the same kinetic energy. Which one of the following is correct in case of their de-Broglie wavelength:

The logic gate equivalent to the given circuit diagram is:

The electric potential at the centre of two concentric half rings of radii R₁ and R₂, having same linear charge density is:

A cell of emf 90V is connected across series combination of two resistors each of 100Ω resistance. A voltmeter of resistance 400 Ω is used to measure the potential difference across each resistor. The reading of the voltmeter will be:

A body of mass 200g is tied to a spring constant 12.5 N/m, while the other end of spring is fixed at point O. If the body moves about O in a circular path on a smooth horizontal surface with constant angular speed 5 rad/s. Then the ratio of extension in the spring to its natural length will be:

The frequency (ν) of an oscillating liquid drop may depend upon radius (r) of the drop, density (ρ) of liquid and the surface tension (σ) of the liquid as : ν = r^a ρ^b σ^c. The value of a, b, c respectively are

Given below are two statements: Statement I: Acceleration due to earth's gravity decreases as you go 'up' or 'down' from earth's surface. Statement II : Acceleration due to earth's gravity is same at a height 'h' and depth 'd' from earth's surface, if h = d.

The electric field and magnetic field components of an electromagnetic wave going through vacuum is described by E_x = E₀ sin(kz – ωt) B_y = B₀ sin(kz – ωt) Then the correct relation E₀ and B₀ is given by

A photon is emitted in transition from n = 4 to n = 1 level in hydrogen atom. The corresponding wavelength for this transition is (given, h = 4×10^-15 eVs):

For a certain radioactive process the graph between en(R) and t(sec) is obtained as shown in the figure. Then the value of half life for the unknown radioactive material is approximately:

A long solenoid is formed by winding 70 turns cm^-1. If 2.0A current flows, then magnetic field produced inside the solenoid is (µ₀ = 4π×10^-7TmA^-1)

The velocity time graph of body moving in a straight line is shown in figure. The ratio of displacement to distance travelled by the body in time 0 to 10s is: