1
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (More than One Correct Answer)
+4
-1
Change Language
An astronaut of mass m is working on a satellite orbiting the earth at a distance h from the earth’s surface. The radius of the earth is R, while its mass is M. The gravitational pull FG on the astronaut is :
A
Zero since astronaut feels weightless
B
0 < FG < $${{GMm} \over {{R^2}}}$$
C
$${{GMm} \over {{{\left( {R + h} \right)}^2}}}$$ < FG < $${{GMm} \over {{R^2}}}$$
D
FG = $${{GMm} \over {{{\left( {R + h} \right)}^2}}}$$
2
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
A Carnot freezer takes heat from water at 0oC inside it and rejects it to the room at a temperature of 27oC. The latent heat of ice is 336×103 J kg−1. If 5 kg of water at 0oC is converted into ice at 0oC by the freezer, then the energy consumed by the freezer is close to :
A
1.67 $$ \times $$ 105 J
B
1.68 $$ \times $$ 106 J
C
1.51 $$ \times $$ 105 J
D
1.71 $$ \times $$ 107 J
3
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
A toy-car, blowing its horn, is moving with a steady speed of 5 m/s, away from a wall. An observer, towards whom the toy car is moving, is able to hear 5 beats per second. If the velocity of sound in air is 340 m/s, the frequency of the horn of the toy car is close to :
A
680 Hz
B
510 Hz
C
340 Hz
D
170 Hz
4
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Within a spherical charge distribution of charge density $$\rho $$(r), N equipotential surfaces of potential V0, V0 + $$\Delta $$V, V0 + 2$$\Delta $$V, .......... V0 + N$$\Delta $$V ($$\Delta $$ V > 0), are drawn and have increasing radii r0, r1, r2,..........rN, respectively. If the difference in the radii of the surfaces is constant for all values of V0 and $$\Delta $$V then :
A
$$\rho $$ (r) $$\alpha $$ r
B
$$\rho $$ (r) = constant
C
$$\rho $$ (r) $$\alpha $$ $${1 \over r}$$
D
$$\rho $$ (r) $$\alpha $$ $${1 \over {{r^2}}}$$
JEE Main Papers
2023
2021
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12