Q1. The unit of which physical quantity is not pascal?
(a) Moment of inertia
(d) Young’s modulus
Q2. Atmospheric pressure is measured by __________.
Q3. Instrument for measuring rainfall is called –
Q4. Who established the foundations of the quantum theory?
(a) Max Planck
(b) Mark Nicholas
(c) Albert Einstein
(d) Alfred Hitchcock
Q5. If an object, on a free fall from a certain height, reaches the ground in 1 second, what is its velocity on the impact with the ground?
(a) 4.9 m/s
(b) 9.8 m/s
(c) 14.7 m/s
(d) 19.6 m/s
Q6. What are the tw kinds of Rotatory motion?
(a) Spin and Vibrational motion
(b) Spin and Orbital motion
(c) Spin and Translatory motion
(d) Spin and Projectile motion
Q7. ______ is the perpendicular distance between point of application of force and axis of rotation.
(a) Moment arm
(b) Moment of Inertia
Q8. Which among the following is not a unit of distance?
(a) Light year
(c) Astronomical unit
Q9. Who invented Rocket?
(a) Rich K Goyle
(b) E M Forster
(c) Robert Goddard
(d) James Anderson
Q10. Weight of a person at a height of 2R from the centre of the earth, where R is the radius of the earth _______.
(a) Remains same
(b) Becomes half
(c) Becomes twice
(d) Becomes one fourth
Sol. Pascal is not unit of Moment of Inertia. Moment of inertia may be expressed in units of kilogram metre squared (kg. m2) in SI units.
Sol.Atmospheric pressure is measured by Barometer.
Sol. Hyetometer is the instrument used to measure rainfall.
Sol.Max Planck was a German theoretical physicist, considered to be the initial founder of quantum theory, and one of the most important physicists of the 20th Century.
Sol.If an object, on a free fall from a certain height, reaches the ground in 1 second, its velocity on the impact with the ground 9.8 m/s.
Sol.Spin and Orbital motion are the two kinds of Rotatory motion.
Sol.The moment arm or lever arm is the perpendicular distance between the line of action of the force and the center of moments. Moment Arm is the perpendicular distance between point of application of force and axis of rotation.
Sol. Longsec is not the unit of distance.
Sol.Robert Hutchings Goddard (October 5, 1882 – August 10, 1945) was an American engineer, professor, physicist, and inventor who is credited with creating and building the world’s first liquid-fueled rocket.
Sol.Weight of a person at a height of 2R from the centre of the earth, where R is the radius of the earth became one-fourth.
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