Sir Naqvi

Study paper firstyear physics

Study paper for 2ndyear physics

Chap 18 XII

14: Which of the following changes when light enters from air into glass.
a) speed and frequency
b) frequency and wavelength
c) speed and wavelength
d) only speed
e) speed, frequency and wavelength

13: The ratio between angular momentum and torque has the dimensions of _____
A area
B volume
C length
D time
E mass

14: The ratio between angular momentum and moment of inertia has the dimensions of _____
A angular acceleration
B frequency
C angular velocity
D both a and b
E both b and c

11: The ratio between speed of minute hand of a clock to the speed of hour hand is _____
A 12
B 10
C 8
D 6
E 0

12: If A+B = 7j + 7k and A-B=-j+K
Then the magnitudes of A and B are
A 3 & 4
B 0& 4
C 3 & 3
D 5 & 5
E 4 & 4

9: The wheel of a car is moving with a velocity of 10 rev/s comes to rest in 10s. How many radians will it cover before coming to rest.
A 100.2 rad
B 180 rad
C 256.5 rad
D 314.2 rad
E 360 rad

10: The direction of Angular acceleration and angular velocity are remain ____
A towards the center
B perpendicular to each other
C parallel to each other
D antiparallel to each other
E both C and D