1
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is the natural phenomenon based on a simple periscope works?
A
Reflection of light
B
Refraction of light
C
Dispersion of light
D
Total internal reflection of light
2
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following frequency range is sensitive to human ears?
A
0-200 Hz
B
20-20000 Hz
C
200-20000 Hz
D
2000-20000 Hz
3
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which of the following statement(s) about a fluid at rest in a cup is/are correct ?

1. Pressure is same at all the points in the fluid.

2. Pressure is exerted on the walls.

3. Pressure exists everywhere in the fluid.
A
1 and 2
B
2 and 3
C
Only 1
D
1, 2 and 3
4
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following device is used to measure atmospheric pressure?
A
Ammeter
B
Baromter
C
Potentiometer
D
Lactometer
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