• #### General Knowledge Practice Science & Technology Study Material

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a) 32 m
b) 64 m
c) 16 m
d) 8 m

a) Speed
b) Amplitude
c) Frequency
d) Wavelength

##### Brillance of diamond is due to

a) Shape
b) Cutting
c) Reflection
d) Total internal reflection

##### A convex lens is in contact with a concave lens.The magnitutude of the ratio of their focal length is 2/3.Their equivalent focal length is 30 cm.What are their individual focal length?

a) (-75 cm,50 cm)
b) (-10cm, 15 cm)
c) 75 cm, 50 cm
d) (-15 cm, 10 cm)

##### If a unit positive charge is taken from one point to another over an equipotential surface , then

a) Work is done on the charge.
b) Work is done by the charge.
c) Work done is constant
d) No work is done

##### Constanton or manganin is widely used in wire wound standard resistors because of their

a) Tempearture independent resistivity.
b) Very weakly temerature dependent resistivity.
c) Strong dependence of resistivity on temerature.
d) Mechanical strength.

a) 100 W
b) 75 W
c) 50 W
d) 25 W

##### Boyle`s law is applicable for an

b) Isothermal process
c) Isobaric process
d) Isochoric process

##### Sir C.V. Raman got nobel for his discovery about:

a) Theory of vision
b) Theory of vibration of musical instruments
c) Molecular spectra
d) Ultrasonics

##### Solution Is :
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