The speed of light in water is:
2.0x103 ms-1
2.5x103 ms-1
2.3x108 ms-1
2.3x10-8 ms-1
In SI the unit of charge is:
Joule
Volt
Coulomb
Watt
According to coulomb’s law, what happens to the attraction of two oppositely charged objects as their distance of separation increases:
Increases
Decreases
Remains unchanged
Cannot be determined
The output of a NAND gate is 0 when:
Both of its inputs are 0
Both of its inputs are 1
Any of its inputs is 0
Any of its inputs is 1
In C.R.O grid is always connected with potential:
Negative
Positive
High positive
Zero positive
The minimum value of angle of deviation is called:
Minimum angle
Incident angle
Angle of minimum deviation
None of these
A converging lens becomes a magnifying glass when an object is placed:
Outside of focal length
Inside the focal length
Equal of focal length
At double of focal length
The refractive index of ice is:
1.00
1.33
1.31
2.42
