1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
The unit of thermal conductivity is :
A
J m–1 K–1
B
W m K–1
C
J m K–1
D
W m–1 K–1
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
The total energy of an electron in an atom in an orbit is –3.4 eV. Its kinetic and potential energies are, respectively.
A
3.4 eV, – 6.8 eV
B
3.4 eV, 3.4 eV
C
– 3.4 eV, – 3.4 eV
D
– 3.4 eV, – 6.8 eV
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Which of the following acts as a circuit protection device?
A
inductor
B
conductor
C
switch
D
fuse
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
A soap bubble, having radius of 1 mm, is blown from a detergent solution having a surface tension of 2.5 $$ \times $$ 10–2 N/m. The pressure inside the bubble equals at a point Z0 below the free surface of water in a container. Taking g = 10 m/s2, density of water = 103 kg/m3, the value of Z0 is :
A
1 cm
B
10 cm
C
100 cm
D
0.5 cm
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