Exam preparation

VITEEE preparation

VIT's own entrance for B.Tech at its campuses. Physics, Chemistry, Mathematics and Biology practice from the Class 11-12 chapters. Check VIT's notice for the current pattern.

3,941 questions · 2,328 problems

With a Standard plan

Question sets

No timer. Work at your own pace.

All VITEEE question sets →

Practice questions and problems

Hardest first. Try each one on paper before you see the answer.

Physics

Questions

AdvancedA sample starts as a pure radioactive nuclide A, of half-life 6.0 h. Each nucleus of A decays into a nucleus of B, which is itself radioactive, with a half-life of 2.0 h, and decays into a stable nuclide. After how long is the activity of B in the sample greatest?
AdvancedIn a double-slit experiment the slits are 0.40 mm apart and the screen is 1.00 m away. The slits are lit at the same time by light of wavelengths 600 nm and 450 nm. Which of the following statements are correct?

Two long, smooth, horizontal metal rails, 0.50 m apart, lie in a uniform vertical magnetic field of 0.80 T. At one end they are joined by an uncharged capacitor of 0.50 F. A metal rod of mass 0.20 kg lies across the rails, as in the figure, and is given a push so that it starts sliding away from the capacitor at 7.0 m/s. No other force acts along the rails. The rod and rails together have a resistance of 2.0 Ω. How much heat is produced in the circuit in all, by the time the current has stopped?