Question 2 :
The pressure exerted by a column of mercury 76cm high and at 0C is called_______________
Question 5 :
If the length of the second pendulum becomes four times, then its time period will become________________
Question 6 :
The magnitude of the cross product is equal to the dot product between them. The angle between the two vectors is________________
Question 7 :
A cup of milk is placed in a microwave oven. Tell which statements is false. (1) Milk will be heated up only. (2) Cup will remain cool. (3) Both cup and mild will get hot
Question 9 :
Minimum current required to produce a deflection of 1 mm on a scale at a distance of 1 meter is__________________
Question 11 :
When we excite some atoms by heat collision or electrical discharge they will________________
Question 12 :
A rubber cord of cross-sectional area 2cm2 has a length of 1m. When a tensile force of 10N is applied the length of the cord increases by 1cm. What is the youngs modulus of rubber
Question 16 :
If we whirl a stone at the end of a string in the vertical circle, it is likely to break when the stone is________________
Question 17 :
Total distance travelled by a bob of the simple pendulum in one vibration is equal to________________
Question 18 :
The restoring force acting on the simple pendulum is given by_______________
Question 19 :
After traveling through a vacuum a photon of light entering into some transparent denser medium. Thus the energy of light______________
Question 20 :
A vector can be multiplied by a number. The number may be_______________
Question 22 :
A 10 electric heater is connected to a 220V 50Hz mains supply. What is the peak value of the potential difference across the heater element
Question 24 :
A convex lens of focal length f1 and a concave lens of focal length f2 are placed in contact. The focal length of the combination is_____________
Question 26 :
A moving coil galvanometer of resistance 100 gives half scale deflection for a current of 20mA. What will be the potential difference across it
Question 29 :
Ratio of the weight of H-atom to that of an electron is approximately______________