481. Which of the following determines the acceleration due to gravity?
(A) The rotation of the earth
(B) The density of the earth
(C) The shape of the earth
D) The shape, density, and the rotation of the earth
482. The dimension for force F?
(A) ML
(B) MLQ
C) MLT-2
(D) ML-2T-2
483. Which is not the unit for mass?
(A) Kg
(B) U
C) Dyn
(D) All are units of mass
484. The scattered photon in the Compton effect has?
A) Less energy than the incident photon and smaller frequency.
(B) Less energy than the incident and greater frequency.
(C) More energy than the incident photon and smaller frequency.
(D) None of the above
485. An ideal gas occupies a volume of 100 cm3 at 20 degrees Celsius and a pressure of 100 Pa. Determine the number of moles of gas in the container?
(A) 4.11×10-6 mol
(B) 4.11×10-4 mol
C) 6.01×10-6 mol
(D) 6.01×10-3 mol
486. The __ will cause the least damage to a person exposed to radioactive rays?
(A) Alpha rays
(B) Beta rays
C) Gamma rays
(D) None of the above
487. A bullet is shot from a rifle. As a result, the rifle recoils. The dynamic energy of the rifle when contrasted with that of the projectile is:
A. Less
B. Greater
C. Equal
D. Cannot be concluded
488. Which of the following is not a collision that is perfectly inelastic?
A. Striking of two glass balls
B. A sandbag being hit by a bullet
C. An electron captured by a proton
D. A man hopping onto a moving truck
489. Which of the following is true?
A. In inelastic collisions, neither momentum nor kinetic energy is conserved.
B. Force is preserved in all crashes yet active energy is moderated exclusively in inelastic impacts
C. Momentum, but not kinetic energy, is conserved in all collisions
D. In all collisions, momentum and kinetic energy are conserved.
490. A solar cell converts sun’s energy into:
A. Heat energy
B. Electric energy
C. Light
D. Sound
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