Which one of the following bulbs has the least resistance ?
Which one of the following bulbs has the least resistance ?
A. 100 watt
B. 200 watt
C. 300 watt
D. 60 watt
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Linear momentum of a photon is_______________?
Linear momentum of a photon is_______________?A. zero
B. hv/c2
C. hv/c
D. c2/hvA stone is thrown upward from the top of a 59.4m high cliff with an upward velocity component of 19.6m/s how long is the stone in the air?
A stone is thrown upward from the top of a 59.4m high cliff with an upward velocity component of 19.6m/s how long is the stone in the air?A. 4.00 s
B. 5.00 s
C. 6.00 s
D. 7.00 sApplying newtons formula,
S= ut + (1/2)at^2
Let downwards direction be (-) be
, so
-59.4 = 19.5t – (1/2) 10t^2
By Sloving this you will get ,t= 6 secWhen A.C current passes through a capacitor then the current relationship will be_______________?
When A.C current passes through a capacitor then the current relationship will be_______________?A. The current lead voltage by phase angle is 90 degrees
B. The voltage leads current by phase angle is 90 degrees
C. The current lead voltage by phase angle is 45 degrees
D. The voltage leads current by phase angle is 45 degreesWhich of the following is not an example of projectile motion ?
Which of the following is not an example of projectile motion ?A. a gas filled ballon
B. bullet fired from gun
C. a football kicked
D. a base ball shotThe power of a concave lens is_______________?
The power of a concave lens is_______________?A. real
B. virtual
C. positive
D. negativeA piece of copper and a piece of germanium are cooled from the room temperature down to 77 K.
A piece of copper and a piece of germanium are cooled from the room temperature down to 77 K.A. The resistance of each of them increases.
B. The resistance of each of them decreases.
C. The resistance of copper decreases and that of germanium increases.
D. The resistance of copper increases and that of germanium decreases