20080 marks23 questions
10 of its 23 questions are here. The rest have a figure or are still being checked, so for now they're only in the official PDF.
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Source: IIT-JEE 2008, Paper 1, Physics, published by JEE (Advanced). The official PDF
Which one of the following statements is WRONG in the context of X-rays generated from a X-ray tube?
Two beams of red and violet colours are made to pass separately through a prism (angle of the prism is 60°). In the position of minimum deviation, the angle of refraction will be
An ideal gas is expanding such that PT² = constant. The coefficient of volume expansion of the gas is
Two balls, having linear momenta p⃗₁ = p î and p⃗₂ = −p î, undergo a collision in free space. There is no external force acting on the balls. Let p⃗₁′ and p⃗₂′ be their final momenta. The following option(s) is(are) NOT ALLOWED for any non-zero value of p, a₁, a₂, b₁, b₂, c₁ and c₂.
In a Young’s double slit experiment, the separation between the two slits is d and the wavelength of the light is λ. The intensity of light falling on slit 1 is four times the intensity of light falling on slit 2. Choose the correct choice(s).
STATEMENT-1 In a Meter Bridge experiment, null point for an unknown resistance is measured. Now, the unknown resistance is put inside an enclosure maintained at a higher temperature. The null point can be obtained at the same point as before by decreasing the value of the standard resistance. and STATEMENT-2 Resistance of a metal increases with increase in temperature.
STATEMENT-1 An astronaut in an orbiting space station above the Earth experiences weightlessness. and STATEMENT-2 An object moving around the Earth under the influence of Earth’s gravitational force is in a state of “free-fall”.
STATEMENT-1 Two cylinders, one hollow (metal) and the other solid (wood) with the same mass and identical dimensions are simultaneously allowed to roll without slipping down an inclined plane from the same height. The hollow cylinder will reach the bottom of the inclined plane first. and STATEMENT-2 By the principle of conservation of energy, the total kinetic energies of both the cylinders are identical when they reach the bottom of the incline.
STATEMENT-1 The stream of water flowing at high speed from a garden hose pipe tends to spread like a fountain when held vertically up, but tends to narrow down when held vertically down. and STATEMENT-2 In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.
Paragraph for Question Nos. 41 to 43. In a mixture of H – He⁺ gas (He⁺ is singly ionized He atom), H atoms and He⁺ ions are excited to their respective first excited states. Subsequently, H atoms transfer their total excitation energy to He⁺ ions (by collisions). Assume that the Bohr model of atom is exactly valid. The quantum number n of the state finally populated in He⁺ ions is