Practice paper · Annual

Which of the following is NOT a rule for arithmetic operations with significant figures?

1. AIn multiplication or division, the final result should retain as many significant figures as in the original number with the least significant figures.
2. BIn addition, or subtraction, the final result should retain as many decimal places as in the number with the least decimal places.
3. CIn addition, or subtraction, the final result should retain as many significant figures as in the original number with the least significant figures.
4. DExact numbers in formulae have an infinite number of significant figures.

The horizontal component of a projectile’s velocity, in the absence of air resistance:

1. AContinuously increases throughout its flight path.
2. BContinuously decreases until it reaches its maximum height.
3. CRemains constant throughout its flight path.
4. DBecomes zero at the peak of its trajectory.

A bird weights 2 N sitting inside a cage of weight 1 N. If it starts flying then what is weight of bird and cage assembly?

1. A1.5 N
2. B3 N
3. C2.5N
4. D4N

Which of the following pairs correctly matches a physical concept with its characteristic?

1. AInelastic Collision: Kinetic energy is conserved.
2. BConservative Force: Work done in a closed loop is non-zero.
3. CPower: Unit is Joule.
4. DWork: Can be negative.

If the linear momentum is increased by 50%, then kinetic energy will increase by

1. A50%
2. B100%
3. C125%
4. D25%

One circular ring and one circular disc both having same mass and radius. The ratio of their moment of inertia about the axis passing through their centers and perpendicular to their planes will be:

1. A1 : 1
2. B2 : 1
3. C1 : 2
4. D4 : 1

Energy required to move a satellite of mass m from an orbit of radius 2R to 3R is, (M mass of earth):

1. AGMm/12R²
2. BGMm/3R²
3. CGMm/8R
4. DGMm/6R

For VI candidates A mild steel wire of Length 2L and cross-sectional Area A is stretched well within elastic limit, horizontally between two pillars. A man m is suspended from the mid-point of the wire strain in the wire is:

1. Ax/L
2. Bx²/2L
3. Cx²/L
4. Dx²/2L²