Question

In the relation varsin (wt+kar) the dimensional formula for kx (an) wt same as
Length can not be measured by
1) Fermo
2) debye
3) micron
4) Light year
SONAR emits which of the following waves
1) radio
2) light
3) Uitra saund
4) none of these
The velocity v of a particle at time I is given by v = att where ab and c are constants The
dimensions of a b and care
1) 12). (LT) and (LT)
2) (LT?). [L] and (7)
3) (29).IT) and (LT)
4) (LT-?). [LT] and [L]
Percentage errors in the measurement of mass and speed are 2% and 3% respectively. The error in
the estimate of kinetic energy obtained by measuring mass and speed will be
18
22
3) 12%
4) 10%
The angle subtended by a coin of radius 1 cm held at a distance of 80 cm from your eyes is
- radian
2) - radian 3 ) – radian 4) – radian
If the dimension of a physical quantity are given by MaLbTthen the physical quality will be
a Velocity
f a =1.b , 1
b) Acceleration if a=1, b=1, c= -2
C) Force if a=0,b= -1, CE2
d) Pressure if a=1, b= -1,= -2
The velocity - time relation of an electron starting from rest is given by v = kt where k = 2 m/s2
Calculate the distance travelled in 3 seconds
27 m
3) 8 m
4) 9 m
If in case of motion, displacement is directly proportional to square of time elapsed. If the constant of
proportionality is 5 m/s. Find the acceleration
0.5 m/s2
- 2 10m/s²
3) 15 m/s²
4) 20 m/s
A ball is released from top of a lower of heighth metres. It takes T seconds to reach the ground
What is the position from ground m-seconds
3)​

Answer 1

Answer:

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