A. 120 J
B. 60 J
C. 30 J
D. 0.02 J
Related Mcqs:
- The relation between horse power and watt is_________________?
A. 1 hp = 546 watts
B. 1 hp = 746 watts
C. 1 hp = 1000 watts
D. 1 hp = 946 watts - When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?
A. 5m/s, 1m/s
B. 3m/s, 3m/s
C. 6m/s, 1m/s
D. 4m/s, 2m/s - The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________?
A. 1 N
B. 10 N
C. 100 N
D. none - One mega watt hour is equal to_________________?
A. 36 x 106 J
B. 36 x 1012 J
C. 36 x 109 J
D. 36 x 108 J - There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?
A. 100W
B. 200W
C. 60W
D. all - Which one of the following materials is useful for making bulb filaments ?
A. constantan
B. nichrome
C. copper
D. tungsten - How much heat does a 40 W bulb generates in one hour ?
A. 144000J
B. 144J
C. 1.44J
D. 14J - Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains ?
A. 40 W bulb
B. 60 W blub
C. 100 W blub
D. all will burn equally brightly - If a glass plate is inserted in between the plate of a capacitor in series with a lighted bulb the brightness of the bulb________________?
A. Remains same
B. Brightness increases
C. Brightness decreases
D. No light - Geothermal energy is a _______________________ source of energy?
A. non-renewable
B. stable
C. renewable
D. none of the above
