1
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The refractive index of crown glass is close to 3/2. If the speed of light in air is c, then the speed of light in the crown glass will be close to
A
(3 / 2)c
B
(4 / 9)c
C
(2 / 3)c
D
(9 / 4)c
2
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The volume of a sealed packet is 1 liter and its mass is 800 g. The packet is first put inside the water with a density of 1 g cm-3 and then in another liquid B with a density of 1.5 g cm-3. Then which one of the following statements holds true?
A
The packet will float in both water and liquid B.
B
The packet will sink in both water and liquid B.
C
The packet will sink in water but will float in liquid B.
D
The packet will float in water and sink in liquid B.
3
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
A simple pendulum having bob of mass m and length of string l has time period of T. If the mass of the bob is doubled and the length of the string is halved, then the time period of this pendulum will be
A
T
B
T / $\sqrt2$
C
2T
D
$\sqrt2$T
4
NDA General Ability 4 September 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
In which one of the following devices, the light energy is converted into the electrical energy?
A
Light-emitting diode 
B
Laser diode
C
Solar cell
D
Transistor
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12