601. Which one or more of the following would lead to an increase in the maximum kinetic energy of the ejected photoelectrons from a metal surface on which light is shining?
A) Increasing the frequency of the incident light.
(B) Increasing the number of photons per second.
(C) Decreasing the frequency of the incident light.
(D) None of the above
602. Work done will be zero when the angle between force F and displacement d is?
(A) Zero Degree
(B) 60 Degrees
(C) 80 Degrees
D) 90 Degrees
603. The intensity of sound unit is?
(A) Kelvin
(B) Joule
(C) Energy
D) Decibel
604. The Lorentz transformation equations reduce to Galilean transformations equation when?
(A) Reduction is velocity independent
B) Velocity is very low
(C) Velocity is very large
(D) None of the above
605. A frame of reference stationed on Earth is approximately an example of:
A. Inertial frame
B. Non-Inertial frame
C. Every frame
D. None of these
606. A force applied to a body produces acceleration in:
A. Its opposite direction
B. Its own direction
C. Right angle to the force
D. Circle
607. At what angle of projection, the horizontal range of a projectile is maximum?
A. 30 Degrees
B. 45 Degrees
C. 60 Degrees
D. 90 Degrees
608. For a fixed force, the larger is the mass of a body:
A. Greater is the acceleration
B. Smaller is the acceleration
C. No effect on acceleration
D. Greater is the velocity
609. After terminal velocity, a fog droplet falls vertically with an acceleration:
A. Equal to G
B. Less than G
C. Greater than G
D. Equal to zero
610. A collision in which the kinetic energy is not conserved is called:
A. Elastic collision
B. Inelastic collision
C. Pair Production
D. Pair Annihilation
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