FIITJEE Physics Quiz - Radioactive Decay

What is the initial number of nuclei of B?

N0 (correct)
2N0
4N0
3N0

In which direction is the electric field E directed?

Vertically up (correct)
Horizontally to the right
Downwards
Inside the plane of the paper

What is the angle at which the bob is released at rest?

60⁰ (correct)
45⁰
90⁰
30⁰

What is the direction of the magnetic field B?

Directed inside the plane of the paper (B) Signup and view all the answers

At time t = t0, what happens to the number of nuclei of B?

Stop changing (B) Signup and view all the answers

What is the pivot point of the light string?

Point O (D) Signup and view all the answers

What is the maximum height attained by the hollow sphere?

v2 / g (B) Signup and view all the answers

What is the time taken to reach the maximum height for the ring?

2v / g sin θ (B) Signup and view all the answers

What is the maximum height attained by the solid sphere?

7v 2 / 10g (D) Signup and view all the answers

What is the time taken to reach the maximum height for the disc?

3v / 2g sin θ (B) Signup and view all the answers

Which object attains a maximum height of 3v 2 / 4g?

Disc (A) Signup and view all the answers

What is the maximum height attained by the object with the angle of incline θ?

2v sin θ / g (C) Signup and view all the answers

What occurs when the total mechanical energy is maximum?

The combination is (III)(iv)(P) (D) Signup and view all the answers

Where does the maximum friction act between the body and the incline?

The combination is (III)(iv)(S) (A) Signup and view all the answers

What is the direction of the magnetic field in the square frame of wire?

Perpendicular to the frame (D) Signup and view all the answers

What is the value of 'n' in the equation for the charge on the capacitor?

3 (A) Signup and view all the answers

What is the radius of curvature of the concave mirror?

0.5 m (B) Signup and view all the answers

What is the height of the point light source above the set-up?

0.3 m (A) Signup and view all the answers

What is the acceleration of the electron due to the electric field?

eE/m (A) Signup and view all the answers

What is the velocity component of the electron parallel to the plates?

v0 (B) Signup and view all the answers

What is the angular deviation of the electron from its initial direction of motion?

tan^-1(vy/v0) (A) Signup and view all the answers

What is the time taken by the electron to cross the electric field?

l/v0 (C) Signup and view all the answers

What is the pitch of the helical path of the electron?

2eBV/πm (A) Signup and view all the answers

What is the value of the pitch of the helical path of the electron in millimeters?

9 mm (C) Signup and view all the answers

Which of the following statements about the compound HO OH H OH H CH2OH OH H is true?

It can reduce Tollen's reagent (A) Signup and view all the answers

What is the result of treating oxime of compound Cl with H2SO4/Δ?

A compound P, which on hydrolysis produces Q and R (A) Signup and view all the answers

What is true about R?

It gives brisk effervescence of CO2 with aqueous NaHCO3 (B) Signup and view all the answers

What is Q?

An aliphatic primary amine (A) Signup and view all the answers

What happens when Q is subjected to Hofmann exhaustive methylation?

It produces a compound that has very high solubility in water (B) Signup and view all the answers

What is the result of reacting Q with CHCl3/NaOH?

It produces a foul-smelling compound (A) Signup and view all the answers