If beam 1 is the incoming beam in the figure below, which of the other four beams are due to reflection?

3

Physics & Space Science

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A lunar eclipse can only happen during a

A) new Moon. B) equinox. C) full Moon. D) perigee. E) aphelion.

Physics & Space Science

The quantity "stress" expressed in terms of the fundamental quantities (mass, length, time) is equivalent to:

a. MLT-1. c. M2L-1T-3. b. ML-1T-2. d. a dimensionless quantity.

Physics & Space Science

What is the unit of electric current?

a. The volt. b. The joule. c. The coulomb. d. The ampere. e. The watt.

Physics & Space Science

The path of a light ray through a refracting surface is reversible

Indicate whether the statement is true or false

Physics & Space Science