Physics - Online Test
Q1. Which of the following has the highest number of significant figures?
Answer : Option D
Explaination / Solution:
No Explaination.
Q2. If a particle has negative velocity and negative acceleration, its speed
Answer : Option A
Explaination / Solution:
No Explaination.
Q3. Two masses m1 and m2 are
experiencing the same force where m1< m2. The ratio of
their acceleration a1/a2 is
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. A body of mass 4 m is lying in xy-plane at rest.
It suddenly explodes into three pieces. Two pieces each of mass m move
perpendicular to each other with equal speed v. The total kinetic energy generated due to explosion is
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. A closed cylindrical container is partially filled with water. As the container rotates in a horizontal plane about a perpendicular bisector, its moment of inertia,
Answer : Option A
Explaination / Solution:
No Explaination.
Q6. According to Kepler’s second law, the radial vector to a planet from the Sun sweeps out equal areas in equal intervals of time. This law is a consequence of
Answer : Option B
Explaination / Solution:
No Explaination.
Q7. Two wires are made of the same material and have the same volume. The area of cross sections of the first and the second wires are A and 2A respectively. If the length of the first wire is increased by ∆l on applying a force F, how much force is needed to stretch the second wire by the same amount?
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. When food is cooked in a vessel by keeping the lid closed, after some time the steam pushes the lid outward. By considering the steam as a thermodynamic system, then in the cooking process
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. If the internal energy of an ideal gas U and volume V are doubled then the pressure
Answer : Option B
Explaination / Solution:
No Explaination.
Q10. A spring is connected to a mass m suspended from it and its time period for vertical oscillation is T. The spring is now cut into two equal halves and the same mass is suspended from one of the halves. The period of vertical oscillation is
Answer : Option B
Explaination / Solution:
No Explaination.
