Question

1. The dimensional formula for Planck's constant his
a) [MT! b) [MLT)
c) [MLT'] d) [MLT)
2. The dimension of (H. E.) is
12
a) Length
b) Time
c) Velocity d) Force.
3. The number of significant figure is 5213.0 is
a) One b) Three
c) Five
d) Four
4. Identify the unit vector in the following.
b)
d
V2
2
i+]
C)
5. If a particle has negative velocity and negative acceleration, its speed
a) Increases b) Decreases c) Remains Same d) Zero
6. The relation between linear velocity and angular velocity is given by
W =rů
c) v = w x1 d) = û xw
a) 7 = b) wari
7. Force acting on the particle moving with constant speed is
a) Always zero b) need not be zero c) always non zero d) cannot be concluded
8. If a person moving from pole to equator, the centrifugal force acting on him
a) Increases b) decreases c) remains the same d) Increases and then decreases​

Answer 1

Explanation:

xw

a) 7 = b) wari

7. Force acting on the particle moving with constant speed is

a) Always zero b) need not be zero c) always non zero d) cannot be concluded

8. If a person moving from pole to equator, the centrifugal force acting on him

a) Increases b) decreases c) remains the same d) Increases and then decreases

Answer 2

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