1
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

A person of weight $$70 \mathrm{~kg}$$ wants to loose $$7 \mathrm{~kg}$$ by going up and down $$12 \mathrm{~m}$$ high stairs. Assume he burns twice as much fat while going up than going down. If $$1 \mathrm{~kg}$$ of fat is burnt on expending 9000 k-cal. How many times must he go up and down to reduce his $$7 \mathrm{~kg}$$ weight?

(Take $$g=10 \mathrm{~ms}^{-2}$$)

A
$$18 \times 10^3$$ times
B
$$24 \times 10^3$$ times
C
$$30 \times 10^3$$ times
D
$$21 \times 10^3$$ times
2
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

The current gain of a transistor in common emitter mode is 49. The change in collector current and emitter current corresponding to change in base current by $$5.0 \mu \mathrm{A}$$, will be

A
$$245 \mu \mathrm{A}, 250 \mu \mathrm{A}$$
B
$$240 \mu \mathrm{A}, 235 \mu \mathrm{A}$$
C
$$260 \mu \mathrm{A}, 255 \mu \mathrm{A}$$
D
None of the above
3
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

A cylindrical conductor AB of non-uniform area of cross-section carries a current of 5A. The radius of the conductor at one end A is 0.5 cm. The current density at the other end of the conductor is half of the value at A. The radius of the conductor at the end B is nearly

A
1.4 cm
B
0.7 cm
C
0.6 cm
D
None of these
4
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

One mole of an ideal diatomic gas undergoes transition from A to B along a path AB as shown below.

AIIMS 2017 Physics - Heat and Thermodynamics Question 2 English

The change in internal energy of the gas during the transition is

A
20 kJ
B
$$-$$12 kJ
C
$$-$$20 kJ
D
20 J
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