- (A) Alpha rays
- (B) Beta rays
- (C) Gamma rays
- (D) None of the above
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A box is at rest on a frictionless surface. Three forces are exerted on the box such that box remains at rest. One is a force of 100 N towards the east. Another is a force of 100 N towards the north. What is the third force?
- (A) Zero N towards the Northeast.
- (B) 141.42 N towards the Northeast.
- (C) 141.42 N towards the Southwest.
- (D) None of the above
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Krypton (atomic number 36) has how many electrons in its next to outermost shell?
- (A) 18
- (B) 32
- (C) 50
- (D) 60
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The frequency is adjusted by?
- (A) Filtering
- (B) Ractification
- (C) Tuning
- (D) Demodulation
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Integrated circuits are critical for high speed computers. The fast response is due to?
- (A) Close packing of components.
- (B) Miniaturization
- (C) Miniaturization and close packing of components.
- (D) None of the above
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A uniform wire of length L and diameter d has a resistance R. Another wire of the same material has length 2L and diameter 2d. Its resistance will be?
- (A) R
- (B) R/2
- (C) 2R
- (D) 4R
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Which one or more of the following would lead to an increase in the maximum kinetic energy of the ejected photoelectrons from a metal surface on which light is shinning?
- (A) Increasing the frequency of the incident light.
- (B) Increasing the number of photons per second.
- (C) Decreasing the frequency of the incident light.
- (D) None of the above
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Work done will be zero when angle between force F and displacement d is?
- (A) Zero Degree
- (B) 60 Degree
- (C) 80 Degree
- (D) 90 Degree
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The intensity of sound unit is?
- (A) Kelvin
- (B) Joule
- (C) Energy
- (D) Decibel