An alternating current with a frequency of 100HZ has a period of
- A. 0.03sec
- B. 0.01sec
- C. 0.04sec
- D. 0.15sec
Momentum and Kinetic energy are conserved in
- A. Inelastic collision
- B. Elastic collision
- C. Explosion
- D. Spacecraft
The property of a body to remain at rest or to continue to move in a straight line is known as
- A. force
- B. Impulse
- C. Energy
- D. Inertia
The normal temperature of human body is record at what ranges?
- A. 27°C to 43°C
- B. 30°C to 40°
- C. 98.4°C only
- D. Between 35°C to 37°C
In an inelastic collision
I. Energy is conserved
II. Energy is decreased
III. Energy is increased
IV. Linear momentum conserved
- A. I only
- B. II and IV only
- C. II only
- D. III only
Which of the following instrument is most accurately for comparing electromotive force (e.m.f) of two cells?
- A. Voltmeter
- B. Meter rule
- C. Galvanometer
- D. Potentiometer
When a man moves toward a plane mirror at a speed of 6m/s, the distance the man and his image increased at a speed of?
- A. 2 m/s
- B. 4 m/s
- C. 12 m/s
- D. 14 m/s
Volatile liquids usually
- A. Have high boiling points
- B. have low boiling points
- C. have high densities
- D. have high melting points
Efficiency of a transformer is equal to
- A. Efficiency of transformer = (secondary coil ÷ primary coil) × 100%
- B. Efficiency of transformer = (mechanical advantage ÷ velocity ratio) × 100%
- C. Efficiency of a transformer = (Number of turns in the secondary coil ÷ Number of turns in the primary coil) × 100%
- D. Efficiency of a transformer = (power developed in the secondary coil ÷ power supplied to the primary coil) × 100%
Which one of the following is a vector quantity?
- A. Temperature gradient
- B. Mass
- C. Work
- D. Time
The eyeball consists of a round tough white skin called
- A. Sclerotic
- B. Choroid coal
- C. Optical fiber
- D. Accommodation
The net movement of solvent molecules from a region of high solvent potential to a region of lower solvent potential through a partially or semi permeable membrane is refer to as
- A. Diffusion
- B. Osmosis
- C. Surface tension
- D. Cohesion
A regular spacing or arrangement of atoms in a crystalline material is called
- A. Orbit
- B. Lattice
- C. Atomic structure
- D. Energy level
Heat transfer by convection will take place in one the following substance.
- A. Stone
- B. Wood
- C. Mercury
- D. Water
The r.m.s value of a supply voltage is quoted at 200v. What is the approximate peak value of the voltage?
- A. 200volts
- B. 300volts
- C. 283volts
- D. 250volts
A good electric cell should have the following except
- A. A minimum of polarization effect
- B. A long life
- C. A cheap and safe electrolytes
- D. Cost and dangerous of the cell
The dimension of universal gravitational constant is……….?
- A. \( M^{–1}L^3 T^{–2} \)
- B. ML3T2
- C. ML3
- D. MLT-2
For a best result using temperature to achieve an accurate measurement, it is best to use
- A. Mercury thermometer
- B. gas thermometer
- C. clinical thermometer
- D. alcohol thermometer
What is the S.I unit of relative density?
- A. kg m-2
- B. kg m2
- C. kg cm3
- D. has no S.I unit
If a projectile has maximum range of 36m, find the speed of projection (Take g = 9.8m/s2)
- A. 19m/s
- B. 2m/s
- C. 4m/s2
- D. 7m/s2
Neutron were discovered by
- A. J.J. Thompson
- B. James Chadwick
- C. Michael faraday
- D. Dalton