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IMPORTANT
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If V1 is the velocity of light, V2 is the velocity of X-rays and V3 is the velocity of g-rays, then which one of the following is correct?

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Important Questions on General Science

EASY
Defence
IMPORTANT
CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 204
The phenomenon of ‘total internal reflection’ is observed in which one of the following?
EASY
Defence
IMPORTANT
CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 205
Which one of the following lenses would you prefer to use while reading very small letters printed on a label?
MEDIUM
Defence
IMPORTANT
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
EASY
Defence
IMPORTANT
CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 207
Which one of the following has the highest energy?
EASY
Defence
IMPORTANT
CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 208
Spectacles used for viewing 3-dimensional films have _____.
EASY
Defence
IMPORTANT
CAPF Assistant Commandants>Chapter 3 - General Science>PHYSICS>Q 210
A television remote uses _____.
EASY
Defence
IMPORTANT
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.

MEDIUM
Defence
IMPORTANT
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 _____.