- The dimensions of are
- [L
^{-1}T] - [LT
^{-1}]

- The electric and the magnetic field, associated with an e.m. wave, propagating along the +z-axis, can be represented by
- The maximum height attained by a projectile when thrown at an angle q with the horizontal is found to be half the horizontal range. Then q =
- Tan
^{-1} - Tan
^{-1}2

- Tan
- The moment of inertia of a thin uniform rod of mass M and length L about an axis passing through its midpoint and perpendicular to its length is I
_{0}. Its moment of inertia about an axis passing through one of its ends and perpendicular to its length is- I0 + ML2
- I
_{0}+ 2ML^{2}

- The ratio of the velocity of sound m hydrogen to that in helium at the

same temperature is - Two equal forces (P each) act at a point inclined to each other at an angle of 120°. The magnitude of their resultant is _______.
- P
- 2 P

- Two waves are represented by the equations y1 = asin(wt + kx + 0.57)m and y2 = acos(wt + kx)m, wherex is in meter and t in s. The phase difference between them is
- 0.57 radian
- 1.0 radian
- 1.25 radian
- 1.57 radian

- With what velocity should an observer approach a stationary sound source so that the apparent frequency of sound should appear double the actual frequency? (v is velocity of sound).
- 3
- 2

- When the angle of incidence is 60° on the surface of a glass slab, it is found that the reflected ray is completely polarised. The velocity of light in glass is
- 3 ´ 10
^{8}ms^{-1} - 2 ´ 10
^{8}ms^{-1} - ´ 10
^{8}ms^{-1} - ´ 10
^{8}ms^{-1}

- 3 ´ 10
- A missile is fired for maximum range with an initial velocity of 20 m/s. If g = 10

m /s_{2}, the range of the missile is- 20 m
- 40 m
- 50 m
- 60 m