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Physics — quick quiz

5 real BPSSC SI questions on Physics. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 5

HARD

The work function of a metal is 2.5 eV. Light of wavelength 4000 Å (angstrom) is incident on the metal surface. Given that h = 6.6 × 10⁻³⁴ J·s, c = 3 × 10⁸ m/s, and 1 eV = 1.6 × 10⁻¹⁹ J, what is the maximum kinetic energy of the emitted photoelectrons?