20100 marks19 questions
7 of its 19 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 2010, Paper 2, Physics, published by JEE (Advanced). The official PDF
A Vernier calipers has 1 mm marks on the main scale. It has 20 equal divisions on the Vernier scale which match with 16 main scale divisions. For this Vernier calipers, the least count is
A hollow pipe of length 0.8 m is closed at one end. At its open end a 0.5 m long uniform string is vibrating in its second harmonic and it resonates with the fundamental frequency of the pipe. If the tension in the wire is 50 N and the speed of sound is 320 ms⁻¹, the mass of the string is
A biconvex lens of focal length 15 cm is in front of a plane mirror. The distance between the lens and the mirror is 10 cm. A small object is kept at a distance of 30 cm from the lens. The final image is
A tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical uniform electric field of strength (81π/7) × 10⁵ Vm⁻¹. When the field is switched off, the drop is observed to fall with terminal velocity 2 × 10⁻³ m s⁻¹. Given g = 9.8 m s⁻², viscosity of the air = 1.8 × 10⁻⁵ Ns m⁻² and the density of oil = 900 kg m⁻³, the magnitude of q is
A diatomic ideal gas is compressed adiabatically to 1/32 of its initial volume. The initial temperature of the gas is Tᵢ (in Kelvin) and the final temperature is aTᵢ, the value of a is
Image of an object approaching a convex mirror of radius of curvature 20 m along its optical axis is observed to move from 25/3 m to 50/7 m in 30 seconds. What is the speed of the object in km per hour?
A large glass slab (μ = 5/3) of thickness 8 cm is placed over a point source of light on a plane surface. It is seen that light emerges out of the top surface of the slab from a circular area of radius R cm. What is the value of R?