The falling of light energy on a metal such that electrons are liberated from the metal is called
electron effect
metal electron effect
metal emission
photoelectric effect
photoemission
Correct answer is E
No explanation has been provided for this answer.
3.75cm
7.50cm
15.00cm
30.00cm
150.00 cm
Correct answer is C
No explanation has been provided for this answer.
The main function of the commutator in a simple d.c. motor is to
enable the armature to rotate freely
increase the flux linking the armature windings
maintain a direct current in the armature
provide uniform magnetic field around the armature
reverse the direction of the current in the armature.
Correct answer is E
No explanation has been provided for this answer.
10.0cm
30.0cm
45.0cm
55.0cm
250.0cm
Correct answer is D
An astronomical telescope is said to be in NORMAL adjustment when the distance between the objective lens and the eyepiece equals the sum of their focal lengths.
hence,
D = F\(_{e}\) + F\(_{o}\)
= 50cm + 5cm
= 55cm
brass is less dense than clay
clay expands more slowly than brass
clay loses heat faster than brass
the specific heat capacity of brass is higher than that of clay
the specific heat capacity of brass is lower than of clay.
Correct answer is E
No explanation has been provided for this answer.