The phenomenon of photoelectric effect is NOT used in
automatic doors
bimetallic strip thermometers
light meters in cameras
setting off burglar alarms
sound production from film tracks.
Correct answer is B
No explanation has been provided for this answer.
The silvered walls of a vacuum flask minimise loss of heat due to
conduction and convection
conduction only
convection and radiation
convection only
radiation only
Correct answer is E
No explanation has been provided for this answer.
27.8
17.8
13.6
6.4
3.6
Correct answer is C
No explanation has been provided for this answer.
2cm3
4cm3
6cm3
8cm3
12cm3
Correct answer is E
No explanation has been provided for this answer.
Crompton effect
de Broglie’s laws
Frank-Hertz experimental law
Heisenberg’s uncertainly principle
wave-particle paradox
Correct answer is D
No explanation has been provided for this answer.