List of practice Questions

1 joule/ 1 coulomb =
The graph between potential difference (on X-axis) and current (on Y-axis) for a conductor gives a straight line
The materials which have resistivity in the order of 1014 to 1016 Ω-m are
Match the following:
Physical quantitySI Unit
iElectric currentaCoulomb
iiElectric chargebVolt
iiiElectric potentialcAmpere
The material suitable for making heating element of electric iron is
Pick the correct answer from the following two statements:
a) A lens has at least one curved surface.
b) A plano-concave lens has two curved surfaces.
A convex lens gives an image of the same size of the object when the object is placed
Which of the following lens is used as magnifying lens?
A focal plane is
According to laws of refraction, which of the following lie in the same plane?
A light ray travels from air to glass with an angle of incidence of 45°. The possible angle of refraction is
The speed of light in benzene is 2×108 m/s. Its refractive index is (speed of light in vacuum = 3x108m/s)
Which of the following is not an example of refraction?
A samosa appears to be cool outside but it is hot when we eat because the curry inside it has ingredients of
When touched, we feel that a metal piece is colder than a wooden piece. This is due to the transfer of heat from our fingers to
Two bodies A and B are at temperatures - 100 °C and 173 K respectively. The body at higher temperature is
The amount of heat required to raise the temperature of 1 gram of water by 1 °C is called
Which of the following is not a measure of central tendency?
The arithmetic mean of a-3d, a- d, a+d and a + 3d is
Mode of 1, 2, 3, 8, 10, 11, 16 is
The formula for median in a grouped data is (with usual notation)
If three coins are tossed, then the total number of outcomes are
E1 and E2 are mutually exclusive, then \(E_1∩ E_2=\)
A bag contains 4 black balls and 6 red balls, if one ball is drawn at random, then the probability of getting a red ball is
The probability that a non leap year will have 53 Thursdays is