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Which one of the following lenses would you prefer to use while reading very small letters printed on a label?

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Important Questions on General Science

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CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 206
Match List-I with List-II and select the correct answer using the codes given below.
List -I (Phenomenon List -II (Reason)
A. Reverberation 1. Occurs when two waves of equal frequency superpose
B. Resonance 2. Occurs when two waves have slightly different frequencies superpose
C. Refraction of light 3. Prolonged echo
  4. Occurs as a raw of light enters second medium
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CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 207
Which one of the following has the highest energy?
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CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 208
Spectacles used for viewing 3-dimensional films have _____.
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CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 210
A television remote uses _____.
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CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 211

Examine the two statements carefully and select the answer to these questions using the codes given below.

Statement-I: The mirror used in searchlight is parabolic.

Statement-II: All the rays coming from the source at the focus of a parabolic mirror are reflected as an intense parallel beam.

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CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 212
Advanced sunrise and delayed sunset found in the sky are due to the phenomenon of _____.
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CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 213
The formation of colours in soap bubbles is due to the phenomenon of _____.
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CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 214

Match List-I with List-II and select the correct answer using the codes given below the lists.

List-I (Explanation) List-II (Term)
A. Colour of an opaque object. 1. Fluorescence
B. Colour observed through a coloured glass. 2. Reflection
C. Bending of the image of a rod dipped in water partially. 3. Transmission
D. Shining observed when one steps on an earthworm. 4. Refraction