RRB JE Mock Test 2019

1.  White light is made up of seven colors. What is the method of separating the colors?                  (1)

1. 1. By passing it through a prism
2. 2. By filtration
3. 3. Can’t be separated
4. 4. Both (a) and (b)

2.  Retina of the eye is comparable to which of the following parts of a traditional camera?              (1)

1. 1. Film
2. 2. Lens
3. 3. Shutter
4. 4. Cover

3. The filament of an electric bulb is made of                (4) 

1. 1. copper
2. 2. Aluminum
3. 3. lead
4. 4. tungsten

4. Which mirror is used as a rear view mirror in the vehicles?         (2)

1. 1. Plane
2. 2. Convex
3. 3. Concave
4. 4. Plano concave

5.       The reason of mirage is            (4)

1. 1. Interference of light
2. 2. Diffraction of light
3. 3. Polarization of light
4. 4. Total internal reflection of light