Prism & Optical Instruments

Choose the prism in the above figure

• (iii)

• (ii) & (iii)

• (ii), (iii), (iv)

• (ii) & (iv)

If

 $i=37^o\ and\ e=43^o$  find the angle of deviation

•  $20\degree$  

•  $53\degree$  

•  $60\degree$  

•  $40\degree$  

Choose the correct pair of complementary colours

• Red-Green

• Orange-Green

• Blue-Red

• Purple-Green

Primary Colors in Additive Color Mixing

• Red

• Green

• Yellow

• Cyan

• Blue

For the screen of your smartphone, the primary colors are

• Red

• Blue

• Green

• Magenta

• Yellow

What are the primary colors for subtractive mixing of colors

• Red

• Cyan

• Magenta

• Blue

• Yellow

When a red colored object is viewed in blue light, it appears

Near point and far point for a normal eye are:

•  $25\ cm,\ 1m$  

•  $20cm,\ \infty$  

•  $25cm,\ \infty$  

•  $0,\infty$  

A near sighted person is unable to see clearly objects beyond 4m. What is the focal power of lens he should wear?

• -0.4D

• -0.5D

• -0.25D

• +0.25D

A far sighted person is unable to see clearly objects which are nearer than 50cm. Prescribe a suitable lens with power.

• 0.2D

• 2D

• 1.5D

• 4D