Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Dual Nature of Radiation
MCQ (Single Correct Answer)
Semiconductor Devices and Logic Gates
MCQ (Single Correct Answer)
Communication Systems
MCQ (Single Correct Answer)
1
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

If the earth were to spin faster, acceleration due to gravity at the poles

A
increases
B
decreases
C
remains the same
D
depends on how fast it spins
2
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The height at which the acceleration due to gravity becomes $$\frac{g}{16}$$ (where, g = acceleration due to gravity on the surface of the earth) in terms of R is, if R is the radius of earth.

A
$$2R$$
B
$$3R$$
C
$$\sqrt2R$$
D
$$\sqrt3R$$
3
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

The escape velocity of a projectile on the earth's surface is 11.2 km/s. A body is projected out with thrice this speed. The speed of the body far away from the earth will be

A
22.4 km/s
B
31.7 km/s
C
33.6 km/s
D
None of these
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Kepler's second law of planetary motion corresponds to

A
conservation of energy
B
conservation of angular momentum
C
conservation of linear momentum
D
conservation of mass
COMEDK Subjects