A Mass of the bob
B Amplitude
C Length of the pendulum
D Weight of the bob
Explanation: Period T = 2pi sqrt(L/g), depends only on length and gravity.
A Equilibrium
B Accelerated motion
C Circular motion
D Projectile motion
Explanation: Zero net force means the object is in translational equilibrium.
Explanation: Impulse has units of Newton-second, equal to change in momentum.
A Maximum
B Negative
C Zero
D Infinite
Explanation: At maximum height, the object momentarily comes to rest.
A 2/5 MR2
B MR2
C 1/2 MR2
D 1/3 MR2
Explanation: Moment of inertia of a solid sphere is 2/5 MR2.
A F = kx2
B F = k/x
C F = kx
D F = mg
Explanation: Hooke\'s Law: F = kx, where k is spring constant and x is displacement.
A Sum of masses
B Inverse of sum
C Product of masses
D Independent of masses
Explanation: F = Gm1m2/r2, proportional to the product of masses.
A 4.9 m
B 9.8 m
C 19.6 m
D 2.45 m
Explanation: h = 1/2 gt2 = 1/2 x 9.8 x 1 = 4.9 m.
A Force x distance
B Work x time
C Work / time
D Force / time
Explanation: Power is the rate of doing work, P = W/t.
A F = ma
B Energy is conserved
C Every action has equal opposite reaction
D Momentum is conserved
Explanation: For every action, there is an equal and opposite reaction.
A v = f/lambda
B v = lambda/f
C v = f lambda
D v = f + lambda
Explanation: Wave speed equals frequency times wavelength.
A Increases
B Remains same
C Decreases
D Becomes zero
Explanation: Waves slow down in a denser medium while frequency stays constant.
A Crest and trough
B Any two points
C Two consecutive crests
D Wave and medium
Explanation: Wavelength is the distance between two consecutive identical points.
A Changes
B Doubles
C Remains constant
D Halves
Explanation: Frequency depends on the source and does not change.
A Longitudinal waves only
B Transverse waves only
C All waves
D EM waves only
Explanation: Superposition applies to all types of waves.
A Odd multiple of lambda/2
B lambda/4
C n lambda where n=0,1,2...
D 3 lambda/2
Explanation: Constructive interference occurs at integer multiples of wavelength.
A Maximum displacement
B Maximum amplitude
C Zero displacement
D Moving particles
Explanation: Nodes are points of zero displacement in a standing wave.
A Amplitude
B Speed
C Frequency due to relative motion
D Wavelength of source
Explanation: Doppler effect causes apparent frequency change due to relative motion.
A 340 m/s
B 1500 m/s
C 5000 m/s
D 300 m/s
Explanation: Speed of sound in air is approximately 343 m/s.
A Transverse waves
B Surface waves
C EM waves
D Longitudinal waves
Explanation: Sound waves are longitudinal waves with compressions and rarefactions.