1
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
An object is placed at the centre of curvature of a concave mirror of focal length 16 cm. If the object is shifted by 8 cm towards the focus, then the nature of the image would be
A
real and magnified
B
virtual and magnified
C
real and reduced
D
virtual and reduced
2
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
A pencil is placed upright at a distance 10 cm from a convex lens of focal length 15 cm. The nature of the image of the pencil will be
A
real, inverted and magnified
B
real, erect and magnified
C
virtual, erect and reduced
D
virtual, erect and magnified
3
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is a conventional energy source?
A
Tidal energy
B
Geothermal energy
C
Solar energy
D
Bio-mass energy
4
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
A container is first filled with water and then the entire water is replaced by mercury. Mercury has a density of 13.6 $$\times$$ 103 kg/m3. If X is the weight of the water and Y is the weight of the mercury, then
A
X = Y
B
X = 13.6Y
C
Y = 13.6X
D
None of these
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