1
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Light waves are incident on an air-glass boundary. Some of the light waves are reflected and some are refracted in the glass.  Which one of the following properties is the same for the incident wave and the refracted wave?
A
Speed
B
Direction
C
Brightness
D
Frequency
2
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following statements is true for a simple harmonic oscillator?
A
Force acting is directly proportional to the displacement from the mean position and is in same direction.
B
Force acting is directly proportional to the displacement from the mean position and is in opposite direction
C
Acceleration of the oscillator is constant
D
The velocity of the oscillator is not periodic
3
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following colours may be obtained by combining green and red colours?
A
Blue
B
Magenta
C
Pink
D
Yellow
4
NDA General Ability 18 April 2021
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which of the following are the primary colours of light?
A
Yellow, Red and Green
B
Blue, Red and Green
C
Violet, Red and Yellow
D
Indigo, Violet and Green
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