WorksheetsResult in Physic
Total questions: 20
Worksheet time: 10mins
When light bends as it enters a different medium the process is known as what?
Refraction
Reflection
diffuse reflection
Specular reflection
street light reflectors as it can spread light over bigger areas is known as
Concave mirror
Convex mirror
Plane mirror
None of the above
The speed of light will be minimum while passing through
water
vaccum
air
glass
Nuclear sizes are expressed in a unit named
Fermi
Angstrom
Newton
Tesla
It is more difficult to walk on ice than on a concrete road because
there is very little friction between the ice and feet pressing it
ice is soft when compared to concrete
there is more friction between the ice and feer
None of these
Rain drops acquire spherical shape due to
viscosity
surface tension
friction
elasticity
If a sound travels from air to water, the quantity that remain unchanged is
velocity
frequency
wavelength
amplitude
The basic reason for the extraordinary sparkle of suitably cut diamond is that
it has well defined cleavage planes
it has a very high transparency
it has a very high refractive index
it is very hard
Air pressure is usually highest when the air is
warm and moist
cool and dry
warm and dry
cool and moist
Two electric bulbs marked 25W – 220V and 100W – 220V are connected in series to a 440Vsupply. Which of the bulbs will fuse?
25 W
Both
100 W
Neither
Ball bearings are used in cycles, scooters etc to
Increase the friction between the wheel and the axle
Reduce the friction between the wheel and the axle
Reduce the friction between ground and the whee
None of the above
If lift is going up with acceleration, the apparent weight of a body is
may be more or less than true weight
more than the true weight
less than the true weight
equal to the true weight
No current will flow between two charged bodies if they have the same
resistance
charge
potential
charge/ potential ratio
To produce deflection in a television picture tube:
an electric field is used
a magnetic field is used
both electric and magnetic field are used
none of the above
Total internal reflection can take place when light travels from
Air to glass
Air to water
Water to glass
Diamond to glass
The information of brilliant colors in a thin soap film is a consequence of the phenomena of
Polarization and interference
Diffraction and dispersion
Multiple refraction and dispersion
Multiple reflection and interference
A periscope works by the principle of
Total internal reflection
Refraction
Diffraction
Reflection & Refraction
photosynthesis takes place faster in
darkness
red light
white light
yellow light
In a freezer ice cubes will be formed more quickly in trays made of
rubber
plastic
aluminium
wood
Which liquid is the most viscous?
Water
Diesel
Milk
Oil
