Question no.1
What is the far point (दूर बिंदु) for normal human eyes?
a) 25 cm
b) 50 cm
c) 100 cm
d) Infinity
Answer. d) Infinity
Question no.2
Refractive index (अपवर्तक सूचकांक) of water is_
a) 1.00
b) 1.33
c) 1.52
d) 2.42
Answer. b) 1.33
Question no.3
A men used a convex lens (उत्तल लेंस) of focal length of 20cm in his Spects, the power of this lensis_
a) +2D
b) -2D
c) +5D
d) -5D
Answer. c) +5D
Question no.4.
In an electric circuit, the voltmeter (वाल्टमीटर) is used_
a) in series
b) in parallel
c) in both manner
d) none of these
Answer. b) in parallel
Question no.5.
One Horse Power (हार्सपावर) is Equal to_
a) 467 watt
b) 500 watt
c) 746 watt
d) 100 watt
Answer. c) 746 watt
Question no.6.
A magnet (चुंबक) attracts_
a) only iron
b) only cobalt
c) only nickel
d) all the above
Answer. d) all the above
Question no.7
Which of the following is the Bio/Gobar gas (बायो/गोबर गैस)?
Question no.8
In a electric bulb filament (फिलामेंट) 0.5 ampere current is passed for 10 minutes, calculate the electric charges passes through the circuit.
a) 5C
b) 20C
c) 300 C
d) 500C
Answer. c) 300 C
Question no.9.
Which of the following mirror is used by a dentist (दंत चिकित्सक) to examine the patient teeth?
a) Convex mirror
b) Concave mirror
c) Plane mirror
d) All the above
Answer. b) Concave mirror
Question no. 10
An electric bulb (बिजली के बल्ब) has rating of 30W, 12V .The maximum current can pass through it, will_
a) 0.4 amp
b) 2.5 amp
c) 12 amp
d) 360 amp
Answer. b) 2.5 amp
Question no. 11
What is the unit of magnetic (चुंबकीय) field intensity_
a) weber
b) Newton/ampere-metre^2
c) Tesla
d) None of these
Answer. c) Tesla
Thanks for visiting our Website: Toppers Level
0 Comments