- ✓Gamma rays
- BX-rays
- CRadio waves
- DMicro waves
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Kinetic energy of emitted cathode rays is dependent on
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(a) Only voltage |
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(b) Only work function |
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(c) Both (a) and (b) |
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(d) It does not depend upon any physical quantity |
A point charge +q is placed at the centre of a cube of side L. The electric flux emerging from the cube is
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(a) |
(b) Zero |
(c) |
(d) |
A glass convex lens (
= 1.5) has a focal length of 8 cm when placed in air. What would be the focal length of the lens when it is immersed in water (
)
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(a) 2 m |
(b) 4 cm |
(c) 16 cm |
(d) 32 cm |
The speed of an electron having a wavelength of
is
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(a) 7.25 × |
(b) 6.26 × |
(c) 5.25 × |
(d) 4.24 × |
The shows two NAND gates followed by a NOR gate. The system is equivalent to the following logic gate

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| (a) OR | (b) AND | (c) NAND | (d) None of these |