Physics - Online Test
Q1. The
time period for small vertical oscillations of block of mass m when the masses
of the pulleys are negligible and spring constant k1 and k2
is
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. A person standing between two parallel hills
fires a gun and hears the first echo after t1
sec and the second echo after t2
sec. The distance between the two hills is
Answer : Option D
Explaination / Solution:
No Explaination.
Q3. Which of the following pairs of physical quantities have same dimension?
Answer : Option B
Explaination / Solution:
No Explaination.
Q4. If an object is dropped from the top of a
building and it reaches the ground at t = 4 s , then the height of the building
is (ignoring air resistance) (g = 9.8 ms–2)
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. A particle of mass m sliding on the smooth double inclined plane (shown in figure) will experience
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. What is the minimum velocity with which a body of mass m must enter a vertical loop of radius R so that it can complete the loop?
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. A particle undergoes uniform circular motion. The angular momentum of the particle remain conserved about,
Answer : Option A
Explaination / Solution:
No Explaination.
Q8. The
kinetic energies of a planet in an elliptical orbit about the Sun, at positions
A, B and C are KA, KB and KC respectively. AC
is the major axis and SB is perpendicular to AC at the position of the Sun S as
shown in the figure. 
Then
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. The Young’s modulus for a perfect rigid body is
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. A hot cup of coffee is kept on the table. After some time it attains a thermal equilibrium with the surroundings. By considering the air molecules in the room as a thermodynamic system, which of the following is true
Answer : Option C
Explaination / Solution:
No Explaination.
