The frequency of beats produced when two tunning forks of frequencies 258Hz and 270Hz are sounded close to each other
- A. 6Hz
- B. 264Hz
- C. 528Hz
- D. 12Hz
Which of the following statements is Not true about atoms?
- A. Atom of different elements have different atomic weights
- B. The mass of an atom is concentrated in the nucleus
- C. An atom is made up of a nucleus and number of electrons
- D. Atoms of all elements are identical
In the diagram above, the direction of the force between N and S in the magnetic field is
- A. MP
- B. SN
- C. NS
- D. PM
From the diagram above, the measuring accuracy of the micrometer screw gauge is
- A. 4.78mm
- B. 4.16mm
- C. 4.66mm
- D. 4.70mm
In the diagram above, which of the following velocity-time graphs shows uniform acceleration of a body from rest?
- A. C
- B. D
- C. B
- D. A
If the magnification of a virtual image formed by an object 10cm from a convex less is 3, then the focal length of the lens is
- A. 10cm
- B. 20cm
- C. 25cm
- D. 15cm
Boiling occurs when the vapour pressure of a liquid is
- A. At the evaporation point
- B. Less than the atmospheric pressure
- C. Greater than the atmospheric pressure
- D. Equal to the atmospheric pressure
The impulse of a force is deduced from Newton’s second law as
- A. F = ma
- B. F = m( \(\frac{v - u}{t}\)
- C. F = mg
- D. F = mv - mu
A body which weighs 50N in air displaces 3.7kg of water when partially immersed in water. Calculate the upthrust on the body?
- A. 8.7N
- B. 37.0N
- C. 87.0N
- D. 13.0N
A manometer is an instrument used for measuring
- A. Relative density of liquid
- B. Pressure in liquids and gases
- C. Humidity
- D. Atmospheric pressure
A satellite revolving around the earth is kept on its orbit by?
- A. Centripetal forces only
- B. Centripetal and frictional forces
- C. Centrifugal forces only
- D. Centripetal and centrifugal forces
Which of the following statements about wave motion is correct?
- A. Electromagnetic waves are transverse
- B. Transverse waves do not require a medium for propagation
- C. Longitudinal waves vibrate perpendicular to the direction of travel
- D. All mechanical waves are longitudinal
Which of the following instruments can be used to measure current in an a.c circuit?
- A. Hot wire ammeter
- B. Moving coil ammeter
- C. Tangent galvanometer
- D. Moving coil galvanometer
Which of the following is obtained when a magenta is mixed with green colour?
- A. Yellow
- B. Blue
- C. White
- D. Red
Shadows and eclipse result from the
- A. Reflection of light
- B. Rectilinear propagation of light
- C. Diffraction of light
- D. Refraction of light
A pool of water appears to be 1.00m deep when viewed vertically from above. What is the actual depth of the pool?
[Refractive index of water = 1.33]
- A. 13.300m
- B. 0.750m
- C. 1.013m
- D. 1.330m
Vapour is said to be saturated on top of an enclosed liquid if _________
- A. The rate of condensation is greater than that of vapourization
- B. The rate of condensation is equal to that of vapourization
- C. There is neither condensation nor vaporization of the liquid
- D. The rate of condensation is less that that of vaporization
Which of the following does Not use magnetic effect of current to function?
- A. Lead acid accumulator
- B. An electric bell
- C. A moving coil galvanometer
- D. A telephone receiver
What will happen to the pressure of a gas if its temperature is reduced to -273oC?
- A. It will decrease
- B. it will drop to zero
- C. It will increase
- D. It will remain constant
The relative density of a liquid is the ratio of the
- A. Mass of water to the mass of an equal volume of liquid
- B. Upthrust in the liquid to the upthrust in water
- C. Density of water to the density of the liquid
- D. Upthrust in water to the upthrust in the liquid