# Physics - Online Test

Q1. The linear momentum and position vector of the planet is perpendicular to each other at
Explaination / Solution:
No Explaination.

Q2. Consider two wires X and Y. The radius of wire X is 3 times the radius of Y. If they are stretched by the same load then the stress on Y is
Explaination / Solution:
No Explaination.

Q3. In hot summer after a bath, the body’s
Explaination / Solution:
No Explaination.

Q4.  A particle of mass m is moving with speed u in a direction which makes 60° with respect to x axis. It undergoes elastic collision with the wall. What is the change in momentum in x and y direction?

Explaination / Solution:
No Explaination.

Q5. In a simple harmonic oscillation, the acceleration against displacement for one complete oscillation will be
Explaination / Solution:
No Explaination.

Q6. A student tunes his guitar by striking a 120 Hertz with a tuning fork, and simultaneously plays the 4th string on his guitar. By keen observation, he hears the amplitude of the combined sound oscillating thrice per second. Which of the following frequencies is the most likely the frequency of the 4th string on his guitar?.
Explaination / Solution:
No Explaination.

Q7. One of the combinations from the fundamental physical constants is hc/G . The unit of this expression is
Explaination / Solution:
No Explaination.

Q8. Which one of the following Cartesian coordinate systems is not followed in physics?
Explaination / Solution:
No Explaination.

Q9. When a car takes a sudden left turn in the curved road, passengers are pushed towards the right due to
Explaination / Solution:
No Explaination.

Q10. A uniform force of (2iˆ+ ˆj) N acts on a particle of mass 1 kg. The particle displaces from position (3 ˆj + ˆk ) m to (5iˆ+ 3ˆj) m. The work done by the force on the particle is
Explaination / Solution:
No Explaination.