Physics - Online Test
Q1. If a person moving from pole to equator, the centrifugal force acting on him
Answer : Option A
Explaination / Solution:
No Explaination.
Q2.
A particle which is constrained to move
along x-axis, is subjected to a force in the same direction which varies with
the distance x of the particle from the origin as F(x) =-kx+ax3.
Answer : Option D
Explaination / Solution:
No Explaination.
Q3. The kinetic energy of the satellite orbiting around the Earth is
Answer : Option B
Explaination / Solution:
No Explaination.
Q4. In
a horizontal pipe of non-uniform cross section, water flows with a velocity of
1 m s-1 at a point where the diameter of the pipe is 20 cm. The
velocity of water (m s-1) at a point where the diameter of the pipe
is
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. An ideal refrigerator has a freezer at temperature −12°C. The coefficient of performance of the engine is 5. The temperature of the air (to which the heat ejected) is
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. The
following graph represents the pressure versus number density for ideal gas at
two different temperatures T1
and T2. The graph implies
Answer : Option B
Explaination / Solution:
No Explaination.
Q7. If
the inertial mass and gravitational mass of the simple pendulum of length l are not equal, then the time period of the simple pendulum is
Answer : Option A
Explaination / Solution:
No Explaination.
Q8. An organ pipe A closed at one end is allowed to vibrate in its first harmonic and another pipe B open at both ends is allowed to vibrate in its third harmonic. Both A and B are in resonance with a given tuning fork. The ratio of the length of A and B is
Answer : Option C
Explaination / Solution:
No Explaination.
Q9.
A length-scale (l) depends on the permittivity (ε) of a dielectric material, Boltzmann constant ( kB), the absolute temperature (T), the number per unit volume (n) of certain charged particles, and the charge (q) carried by each of the particles. Which of the following expression for l is dimensionally correct?
Answer : Option B
Explaination / Solution:
No Explaination.
Q10. An object is dropped in an unknown planet from height 50 m, it reaches the ground in 2 s . The acceleration due to gravity in this unknown planet is
Answer : Option B
Explaination / Solution:
No Explaination.
