Options:
- A. remains the same
- B. is doubled
- C. is halved
- D. becomes zero
View Answer
A. remains the same
Physics
Which one of the following bulbs has the least resistance ?
Options:
- A. 100 watt
- B. 200 watt
- C. 300 watt
- D. 60 watt
View Answer
C. 300 watt
In monochromatic red light a blue book will probably appear to be_________________?
Options:
- A. black
- B. purple
- C. green
- D. no scientific reasoning available
View Answer
A. black
Light on passing through a Polaroid is ___________________?
Options:
- A. plane polarized
- B. un-polarized
- C. circularly polarized
- D. elliptically polarized
View Answer
A. plane polarized
Which one of the following is massless?
Options:
- A. Proton
- B. Electron
- C. Neutron
- D. Photon
View Answer
D. Photon
What is the shape of velocity, time graph for constant acceleration ?
Options:
- A. straight inclined line.
- B. parabola
- C. inclined curve
- D. declined curve
View Answer
A. straight inclined line.
When a body moves in a straight line then its displacement coincides with__________________?
Options:
- A. distance
- B. force
- C. acceleration is zero
- D. both A and B
View Answer
A. distance
According to Newton sound travel in air under the conditions of_____________________?
Options:
- A. adiabatic
- B. isothermal
- C. isobaric
- D. isochoric
View Answer
B. isothermal
Sound waves do not travel in vacuum because ___________________?
Options:
- A. they are transverse waves
- B. they are stationary waves
- C. they require material medium for propagation
- D. they do not have enough energy
View Answer
C. they require material medium for propagation
Production of heat due to an electric current flowing through a conductor is given by _________________?
Options:
- A. Joule effect
- B. Joule Thomsons effect
- C. Comptons effect
- D. Feed back effect
View Answer
A. Joule effect