How much heat does a 40 W bulb generates in one hour ?
How much heat does a 40 W bulb generates in one hour ?
A. 144000J
B. 144J
C. 1.44J
D. 14J
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If a convex lens of large aperture fails to converge the light rays incident on it to a single point, it is said to suffer from______________?
If a convex lens of large aperture fails to converge the light rays incident on it to a single point, it is said to suffer from______________?A. chromatic aberration
B. spherical aberration
C. both spherical and chromatic
D. distortionThe velocity of an oscillating charge as it moves to and fro along a wire is always_____________?
The velocity of an oscillating charge as it moves to and fro along a wire is always_____________?A. constant
B. zero
C. changing
D. infiniteAccording to Pascals law the pressure of gas in a vessel is_____________?
According to Pascals law the pressure of gas in a vessel is_____________?A. Different in different direction
B. Same in all direction
C. Same only along opposite directions
D. Same only along normal directionsWhat is unit of conductivity?
What is unit of conductivity?A. Ohm
B. Watt
C. mho
D. None of theseReverse process of photoelectric effect is_______________?
Reverse process of photoelectric effect is_______________?A. pair production
B. Compton effect
C. annihilation of matter
D. X-rays productionDavison Germer experiment indicates__________________?
Davison Germer experiment indicates__________________?A. Interference
B. Polarization
C. Electron diffraction
D. Refraction