Longitudinal waves do not exhibit _____________________?
Longitudinal waves do not exhibit _____________________?
A. reflection
B. refraction
C. diffraction
D. polarization
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Propulsion force of a rocket is____________________?
Propulsion force of a rocket is____________________?A. non-conservative force
B. conservative force
C. both A and B
D. none of theseWhich one of the following has the greatest energy gap ?
Which one of the following has the greatest energy gap ?A. insulator
B. conductor
C. semi conductor
D. any of aboveTwo identical metal balls with charges + 2Q and – Q are separated by some distance, and exert a force F on each other. They are joined by a conducting wire, which is then removed. The force between them will now be_________?
Two identical metal balls with charges + 2Q and – Q are separated by some distance, and exert a force F on each other. They are joined by a conducting wire, which is then removed. The force between them will now be_________?A. F
B. F/2
C. F/4
D. F/8In obtaining an X-ray photograph of our hand we use the principle of______________?
In obtaining an X-ray photograph of our hand we use the principle of______________?A. photo electric effect
B. ionization
C. shadow photograph
D. any of aboveChoose the correct statement. In the case of AC circuit ohms law holds for_______________?
Choose the correct statement. In the case of AC circuit ohms law holds for_______________?A. Peak values of voltage and current
B. Effective values of voltage and current
C. Instantaneous values of voltage and current
D. All of the aboveIn an angular motion, Newton’s second law of motion is_____________?
In an angular motion, Newton’s second law of motion is_____________?A. F=ma
B. F=τp/It
C. Στ = I α
D. All above