161. To which one of the following processes is the term CMYK related ?

1. 1. Railway signaling

   
   
   

   2. Navigation

   
   
   

   3. Offset printing

   
   
   

   4. Electronic voting machine

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

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162. A person standing in front of a mirror finds his image thinner but with normal height.
     The mirror in question is

1. 1. Concave and spherical

   
   
   

   2. Convex and spherical

   
   
   

   3. Convex and cylindrical with axis vertical

   
   
   

   4. Convex and cylindrical with axis horizontal

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

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163. What is the essential difference between a terrestrial telescope and an astronomical telescope ?

1. 1. One of the lenses in a terrestrial telescope is concave

   
   
   

   2. The final image formed in a terrestrial telescope is virtual

   
   
   

   3. A terrestrial telescope forms an erect image while an astronomical telescope forms an inverted image

   
   
   

   4. A terrestrial telescope forms an inverted image while an astronomical telescope forms an erect image

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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164. Th plane mirrors A and B are placed at a distance 12 cm apart facing towards each other. An object is placed in between them at a distance 8 cm from the mirror A. What will be the distance between them at a distance 8 cm from the mirror A. What will be the distance between the first two images, formed in the mirror B?

1. 1. 4 cm

   
   
   

   2. 8 cm

   
   
   

   3. 16 cm

   
   
   

   4. 20 cm

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

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165. Assertion (A): Small glass beads fixed on traffic signal glow brightly when light falls upon them.
     Reason (R) : Light is totally reflected when the angle of incidence exceeds a certain critical value and light travelling in a denser medium is reflected from a rarer medium.
     Codes:

1. 1. Both A and R are true and R is the correct explanation of A

   
   
   

   2. Both A and R are but R is not a correct explanation of A

   
   
   

   3. A is true but R is false

   
   
   

   4. A is false but R is true

   
   
   

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1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

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