Question

1. A projectile is 2.6 m above the ground and is launched with a horizontal velocity of 12 m/s. How far horizontally does the projectile travel?

2. The work function of a particular metal is 3.2 eV. If a photon of wavelength 270 nm hits the plate then:

a. what is the energy of the emitted electron?

b. what is the velocity of this electron?

Answer 1

First questions

Height H = 2.6 m

velocity v = 12 m/s

Let time T is taken to fall

Range of projectile is given as

Question 2

Part-A

From Einstines photoelectric equations

Part - B

from relation of kinetic energy.

Thanks for asking.