1
NEET 2017
MCQ (Single Correct Answer)
+4
-1
A U tube with both ends open to the atmosphere, is partially filled with water. Oil, which is immiscible with water, is poured into one side until it stands at a distance of 10 mm above the water level on the other side. Meanwhile the water rises by 65 mm from its original level (see diagram). The density of the oil is

NEET 2017 Physics - Properties of Matter Question 73 English
A
425 kg m$$-$$3
B
800 kg m$$-$$3
C
928 kg m$$-$$3
D
650 kg m$$-$$3
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watt would be
A
450
B
1000
C
1800
D
225
3
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Two rods A and B of different materials are welded together as shown in figure. Their thermal conductivities are K1 and K2. The thermal conductivity of the composite will be

NEET 2017 Physics - Properties of Matter Question 76 English
A
$${{3\left( {{K_1} + {K_2}} \right)} \over 2}$$
B
$${K_1} + {K_2}$$
C
$$2\left( {{K_1} + {K_2}} \right)$$
D
$${{{K_1} + {K_2}} \over 2}$$
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
A body cools from a temperature 3T to 2T in 10 minutes. The room temperature is T. Assume that Newton's law of cooling is applicable. The temperature of the body at the end of next 10 minutes will be
A
$${7 \over 4}\,$$ T
B
$${3 \over 2}$$ T
C
$${4 \over 3}$$ T
D
T
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