The law of reflection hold true for
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26%
Plan mirror only
14%
Concave
10%
Convex
50%
All refrecting surface
π7π₯5
At the time of short circuit the electric current in the circuit
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15%
Vary continuously
17%
Does not change
22%
Reduces substinallly
46%
Increase heavily
π5π₯3π₯°3
π6β€3π₯°2π₯1
π8π₯°6π€©5π3
π14π’3π€©3π2π₯2π1
Which one of the given metals does not react with cold as well as hot water?
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19%
Na
24%
Ca
26%
Mg
31%
Fe
π8β€4π₯2π2π€1
π₯°6π4π3π2π₯2π1
An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element
Anonymous Quiz
46%
Na
27%
Mg
15%
Fe
12%
P
π12π5π4π₯2π2π2
Which among the given alloys contain non-metal as one of its constituents?
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34%
Brass
35%
Amalgam
18%
Gunmetal
13%
None
π₯11π±8β€3π2π₯°2π2π1π€©1
π₯13π4π₯°3π1
What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 C?
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46%
30 A
28%
0.3A
18%
0.5A
8%
5A
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An electrical appliance has a resistance of 25 Ξ©. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
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19%
2.9a
43%
0.92a
21%
29a
16%
9.2a
π4π₯°1
When a 4 Ξ© resistor is connected across the terminals of a 2 V battery, the number of coulombs passing through the resistor per second is:
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33%
0.5
29%
1
28%
2.5
10%
1.0
π4π2π1
Keeping the potential difference constant, the resistance of the circuit is halved. The current will become:
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22%
One four
38%
Four time
24%
Half
16%
Double
π4π₯°2π2π1π₯1
A wire of resistance R1 is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R2, then the ratio R1/ R2 is:
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34%
1/25
28%
25
24%
25/9
14%
0.25
π8π₯°1π1