1. When the distance between the object and the plane mirror increases

1. 1. the image remains same

   
   
   

   2. the size of the image will become less than the size of the object

   
   
   

   3. the distance between the image and the plane mirror increases

   
   
   

   4. the distance between the image and the plane mirror decreasses

   
   
   

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1. View Hint View Answer Discuss in Forum

   the distance between the image and the plane mirror increases

   Correct Option: C

   the distance between the image and the plane mirror increases

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2. The spread in colors in a rainbow on sky is primarily due to

1. 1. dispersion of sunlight

   
   
   

   2. reflection of sunlight

   
   
   

   3. refraction of sunlight

   
   
   

   4. total internal reflection of sunlight

   
   
   

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1. View Hint View Answer Discuss in Forum

   Rainbow (a band of seven colours - VIBGYOR) is a natural spectrum. It is caused by dispersion (i.e. splitting of white light into seven constituent colours VIBGYOR) of sunlight by tiny droplete of water present in the atmosphere.

   Correct Option: A

   Rainbow (a band of seven colours - VIBGYOR) is a natural spectrum. It is caused by dispersion (i.e. splitting of white light into seven constituent colours VIBGYOR) of sunlight by tiny droplete of water present in the atmosphere.

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3. The sun is seen before the actual sun rise because of .........

1. 1. reflection

   
   
   

   2. refraction

   
   
   

   3. scattering of light

   
   
   

   4. rectilinear propagation of light

   
   
   

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1. View Hint View Answer Discuss in Forum

   refraction

   Correct Option: B

   refraction

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4. Butter paper is an example of ...........object.

1. 1. a transparent

   
   
   

   2. a translucent

   
   
   

   3. an opaque

   
   
   

   4. a luminous

   
   
   

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1. View Hint View Answer Discuss in Forum

   a translucent

   Correct Option: B

   a translucent

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5. Night vision cameras do not use

1. 1. amplified light

   
   
   

   2. infrared sensors

   
   
   

   3. heat radiation from objects

   
   
   

   4. X - ray radiation from objects

   
   
   

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1. View Hint View Answer Discuss in Forum

   Night vision cameras do not use X - ray radiation from objects.

   Correct Option: D

   Night vision cameras do not use X - ray radiation from objects.

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