Speed at which stars and galaxies are moving away from us is determined by phenomena of
A) blue shift
B) yellow shift
C) red shift
D) orange shift
Correct Answer:
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Q2: Electric and magnetic fields vary at angle
Q3: Unification of electromagnetic and weak nuclear forces
Q4: Frequency and time period are
A)directly related
B)not related
C)inversely
Q5: Amount by which one oscillation leads or
Q6: Number of oscillations per unit time is
Q7: If the particles of medium vibrate at
Q8: Wave speed is directly proportional to
A)frequency
B)amplitude
C)wavelength
D)energy
Q9: Longitudinal waves gives rise to
A)amplitude
B)frequency
C)wavelength
D)high and low
Q10: Ranges of waves which overlap are
A)x-rays and
Q11: High speed electrons from particle detectors are
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